diff --git a/libresvip/gui/models/table_models.py b/libresvip/gui/models/table_models.py
index 7c11856eb..dceeb31f9 100644
--- a/libresvip/gui/models/table_models.py
+++ b/libresvip/gui/models/table_models.py
@@ -1,6 +1,5 @@
 import re
 from functools import cache
-from gettext import gettext as _
 from typing import Any, Optional
 
 from PySide6.QtCore import QAbstractTableModel, QModelIndex, Qt, Slot
@@ -9,6 +8,7 @@
 
 from libresvip.core.config import LyricsReplacement, LyricsReplaceMode, settings
 from libresvip.extension.manager import plugin_manager
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class PluginCadidatesTableModel(QAbstractTableModel):
diff --git a/libresvip/middlewares/pitch_shift/options.py b/libresvip/middlewares/pitch_shift/options.py
index 776557840..ab7b365ae 100644
--- a/libresvip/middlewares/pitch_shift/options.py
+++ b/libresvip/middlewares/pitch_shift/options.py
@@ -1,7 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class ProcessOptions(BaseModel):
     key: int = Field(
diff --git a/libresvip/middlewares/project_zoom/options.py b/libresvip/middlewares/project_zoom/options.py
index 363d1b985..86241e7f0 100644
--- a/libresvip/middlewares/project_zoom/options.py
+++ b/libresvip/middlewares/project_zoom/options.py
@@ -1,9 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class ProjectZoomOptions(Enum):
     NONE: Annotated[str, Field(title=_("None"))] = "1/1"
diff --git a/libresvip/middlewares/pronounciation_conversion/options.py b/libresvip/middlewares/pronounciation_conversion/options.py
index ed013bc95..39134282d 100644
--- a/libresvip/middlewares/pronounciation_conversion/options.py
+++ b/libresvip/middlewares/pronounciation_conversion/options.py
@@ -1,9 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class PronounciationConversionOptions(Enum):
     NONE: Annotated[str, Field(title=_("None"))] = "Do nothing"
diff --git a/libresvip/middlewares/remove_short_silences/options.py b/libresvip/middlewares/remove_short_silences/options.py
index fe6477da0..46c286f67 100644
--- a/libresvip/middlewares/remove_short_silences/options.py
+++ b/libresvip/middlewares/remove_short_silences/options.py
@@ -1,9 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class NoteLengthOption(Enum):
     ZERO: Annotated[str, Field(title=_("Zero length note"))] = "0/1"
diff --git a/libresvip/middlewares/replace_lyric/options.py b/libresvip/middlewares/replace_lyric/options.py
index a66635228..d3c62cbc1 100644
--- a/libresvip/middlewares/replace_lyric/options.py
+++ b/libresvip/middlewares/replace_lyric/options.py
@@ -1,7 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class ProcessOptions(BaseModel):
     lyric_replacement_preset_name: str = Field(
diff --git a/libresvip/model/option_mixins.py b/libresvip/model/option_mixins.py
index 33a8c2d34..a6233e5de 100644
--- a/libresvip/model/option_mixins.py
+++ b/libresvip/model/option_mixins.py
@@ -1,9 +1,9 @@
 import abc
-from gettext import gettext as _
 
 from pydantic import BaseModel, Field
 
 from libresvip.core.constants import DEFAULT_BPM
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class EnableInstrumentalTrackImportationMixin(BaseModel, abc.ABC):
diff --git a/libresvip/plugins/acep/model.py b/libresvip/plugins/acep/model.py
index bdb36c960..82cf047c2 100644
--- a/libresvip/plugins/acep/model.py
+++ b/libresvip/plugins/acep/model.py
@@ -2,10 +2,8 @@
 
 import itertools
 import math
-import pathlib
 import statistics
 from enum import Enum
-from gettext import gettext as _
 from itertools import chain
 from typing import TYPE_CHECKING, Annotated, Any, Literal, NamedTuple, Optional, Union
 
@@ -22,6 +20,7 @@
 from libresvip.core.time_interval import RangeInterval
 from libresvip.model.base import BaseModel
 from libresvip.model.point import PointList
+from libresvip.utils.audio import audio_path_validator
 from libresvip.utils.music_math import linear_interpolation
 
 from .ace_curve_utils import interpolate_hermite
@@ -29,7 +28,8 @@
 
 if TYPE_CHECKING:
     from collections.abc import Callable
-    from gettext import gettext as _
+
+    from libresvip.utils.translation import gettext_lazy as _
 
 
 class AcepAnchorPoint(NamedTuple):
@@ -270,16 +270,7 @@ class AcepAudioPattern(AcepPattern):
     gain: Optional[float] = None
     analysed_beat: Optional[AcepAnalysedBeat] = Field(None, alias="analysedBeat")
 
-    @field_validator("path", mode="before")
-    @classmethod
-    def validate_path(cls, path: str, info: ValidationInfo) -> str:
-        audio_path = pathlib.Path(path)
-        if not audio_path.is_absolute() and info.context is not None:
-            project_path: Optional[pathlib.Path]
-            if (project_path := info.context.get("path")) and not hasattr(project_path, "protocol"):
-                audio_path = (project_path.parent / path).resolve()
-                path = str(audio_path)
-        return path
+    validate_path = field_validator("path", mode="before")(audio_path_validator)
 
 
 class AcepVocalPattern(AcepPattern):
diff --git a/libresvip/plugins/acep/options.py b/libresvip/plugins/acep/options.py
index 1cfa8b951..ca71e07c9 100644
--- a/libresvip/plugins/acep/options.py
+++ b/libresvip/plugins/acep/options.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from enum import Enum
-from gettext import gettext as _
 from types import SimpleNamespace
 from typing import Annotated, Literal, Union
 
@@ -14,6 +13,7 @@
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 from .model import AcepLyricsLanguage
 from .singers import DEFAULT_SINGER
diff --git a/libresvip/plugins/ass/options.py b/libresvip/plugins/ass/options.py
index f69f19de9..a5eeab01b 100644
--- a/libresvip/plugins/ass/options.py
+++ b/libresvip/plugins/ass/options.py
@@ -1,10 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import SelectSingleTrackMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class SplitOption(Enum):
diff --git a/libresvip/plugins/ccs/options.py b/libresvip/plugins/ccs/options.py
index c53c8c32c..828247156 100644
--- a/libresvip/plugins/ccs/options.py
+++ b/libresvip/plugins/ccs/options.py
@@ -1,11 +1,10 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(EnableInstrumentalTrackImportationMixin, EnablePitchImportationMixin, BaseModel):
diff --git a/libresvip/plugins/ds/options.py b/libresvip/plugins/ds/options.py
index 02640a320..b7a7a6847 100644
--- a/libresvip/plugins/ds/options.py
+++ b/libresvip/plugins/ds/options.py
@@ -1,8 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import EnablePitchImportationMixin, SelectSingleTrackMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(EnablePitchImportationMixin, BaseModel):
diff --git a/libresvip/plugins/gj/options.py b/libresvip/plugins/gj/options.py
index 83f7ba6d7..b221662af 100644
--- a/libresvip/plugins/gj/options.py
+++ b/libresvip/plugins/gj/options.py
@@ -1,5 +1,3 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
@@ -7,6 +5,7 @@
     EnablePitchImportationMixin,
     EnableVolumeImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(
diff --git a/libresvip/plugins/json/options.py b/libresvip/plugins/json/options.py
index 671316a7f..145b57137 100644
--- a/libresvip/plugins/json/options.py
+++ b/libresvip/plugins/json/options.py
@@ -1,7 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class InputOptions(BaseModel):
     pass
diff --git a/libresvip/plugins/lrc/options.py b/libresvip/plugins/lrc/options.py
index 63e03dab3..050bf2905 100644
--- a/libresvip/plugins/lrc/options.py
+++ b/libresvip/plugins/lrc/options.py
@@ -1,9 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class OffsetPolicyOption(Enum):
     TIMELINE: Annotated[
diff --git a/libresvip/plugins/mid/options.py b/libresvip/plugins/mid/options.py
index 951a6f320..23b86ee64 100644
--- a/libresvip/plugins/mid/options.py
+++ b/libresvip/plugins/mid/options.py
@@ -1,11 +1,11 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
 from libresvip.core.constants import DEFAULT_BPM
 from libresvip.model.option_mixins import EnablePitchImportationMixin, EnableVolumeImportationMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class MultiChannelOption(Enum):
diff --git a/libresvip/plugins/mtp/options.py b/libresvip/plugins/mtp/options.py
index afadaa4cc..b7b66ae53 100644
--- a/libresvip/plugins/mtp/options.py
+++ b/libresvip/plugins/mtp/options.py
@@ -1,11 +1,10 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(EnableInstrumentalTrackImportationMixin, EnablePitchImportationMixin, BaseModel):
diff --git a/libresvip/plugins/nn/options.py b/libresvip/plugins/nn/options.py
index 2677dda64..32bd5a663 100644
--- a/libresvip/plugins/nn/options.py
+++ b/libresvip/plugins/nn/options.py
@@ -1,5 +1,3 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
@@ -7,6 +5,7 @@
     SelectSingleTrackMixin,
     StaticTempoMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(EnablePitchImportationMixin, BaseModel):
diff --git a/libresvip/plugins/s5p/model.py b/libresvip/plugins/s5p/model.py
index 73929f32e..2400598ca 100644
--- a/libresvip/plugins/s5p/model.py
+++ b/libresvip/plugins/s5p/model.py
@@ -14,6 +14,7 @@
 from libresvip.core.constants import DEFAULT_BPM, DEFAULT_PHONEME
 from libresvip.model.base import BaseModel
 from libresvip.model.point import PointList
+from libresvip.utils.audio import audio_path_validator
 
 
 class S5pPoint(NamedTuple):
@@ -144,6 +145,8 @@ class S5pInstrumental(BaseModel):
     filename: str = ""
     offset: float = 0.0
 
+    validate_filename = field_validator("filename", mode="before")(audio_path_validator)
+
 
 class S5pMixer(BaseModel):
     gain_instrumental_decibel: float = Field(0.0, alias="gainInstrumentalDecibel")
diff --git a/libresvip/plugins/s5p/synthv_editor_converter.py b/libresvip/plugins/s5p/synthv_editor_converter.py
index fa1f27a6c..9e4785946 100644
--- a/libresvip/plugins/s5p/synthv_editor_converter.py
+++ b/libresvip/plugins/s5p/synthv_editor_converter.py
@@ -12,7 +12,9 @@
 
 class SynthVEditorConverter(plugin_base.SVSConverterBase):
     def load(self, path: pathlib.Path, options: InputOptions) -> Project:
-        s5p_project = S5pProject.model_validate_json(path.read_bytes().decode("utf-8"))
+        s5p_project = S5pProject.model_validate_json(
+            path.read_bytes().decode("utf-8"), context={"path": path}
+        )
         return SynthVEditorParser(options).parse_project(s5p_project)
 
     def dump(self, path: pathlib.Path, project: Project, options: OutputOptions) -> None:
diff --git a/libresvip/plugins/srt/options.py b/libresvip/plugins/srt/options.py
index f69f19de9..a5eeab01b 100644
--- a/libresvip/plugins/srt/options.py
+++ b/libresvip/plugins/srt/options.py
@@ -1,10 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import SelectSingleTrackMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class SplitOption(Enum):
diff --git a/libresvip/plugins/svg/options.py b/libresvip/plugins/svg/options.py
index 45bdd6a2f..1c2302fd0 100644
--- a/libresvip/plugins/svg/options.py
+++ b/libresvip/plugins/svg/options.py
@@ -1,11 +1,11 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 from pydantic_extra_types.color import Color
 
 from libresvip.model.option_mixins import SelectSingleTrackMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class TextAlignOption(Enum):
diff --git a/libresvip/plugins/svip/options.py b/libresvip/plugins/svip/options.py
index dd06fb458..c8173f93e 100644
--- a/libresvip/plugins/svip/options.py
+++ b/libresvip/plugins/svip/options.py
@@ -1,5 +1,4 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
@@ -12,6 +11,7 @@
     EnableStrengthImportationMixin,
     EnableVolumeImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class BinarySvipVersion(Enum):
diff --git a/libresvip/plugins/svp/model.py b/libresvip/plugins/svp/model.py
index 5a91239ac..6e70aea4b 100644
--- a/libresvip/plugins/svp/model.py
+++ b/libresvip/plugins/svp/model.py
@@ -22,6 +22,7 @@
 from libresvip.core.time_interval import RangeInterval
 from libresvip.model.base import BaseModel, Note
 from libresvip.model.point import PointList
+from libresvip.utils.audio import audio_path_validator
 
 from . import constants
 from .interval_utils import position_to_ticks
@@ -501,6 +502,8 @@ class SVAudio(BaseModel):
     filename: str = ""
     duration: float
 
+    validate_filename = field_validator("filename", mode="before")(audio_path_validator)
+
 
 class SVDatabase(BaseModel):
     name: str = ""
diff --git a/libresvip/plugins/svp/options.py b/libresvip/plugins/svp/options.py
index 79f2c6733..64878366b 100644
--- a/libresvip/plugins/svp/options.py
+++ b/libresvip/plugins/svp/options.py
@@ -1,5 +1,4 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated, NamedTuple
 
 from pydantic import BaseModel, Field
@@ -12,6 +11,7 @@
     EnableStrengthImportationMixin,
     EnableVolumeImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class SynthVLanguagePreset(NamedTuple):
diff --git a/libresvip/plugins/svp/synthv_studio_converter.py b/libresvip/plugins/svp/synthv_studio_converter.py
index 19357c65f..d836cc3ae 100644
--- a/libresvip/plugins/svp/synthv_studio_converter.py
+++ b/libresvip/plugins/svp/synthv_studio_converter.py
@@ -15,7 +15,7 @@ def load(self, path: pathlib.Path, options: InputOptions) -> Project:
         sv_content = (
             path.read_bytes().removesuffix(b"\x00").removeprefix("\ufeff".encode()).decode("utf-8")
         )
-        sv_proj = SVProject.model_validate_json(sv_content)
+        sv_proj = SVProject.model_validate_json(sv_content, context={"path": path})
         options.instant = options.instant and sv_proj.instant_mode_enabled
         return SynthVParser(options=options).parse_project(sv_proj)
 
diff --git a/libresvip/plugins/ust/options.py b/libresvip/plugins/ust/options.py
index 7410f9d78..f23ceb05b 100644
--- a/libresvip/plugins/ust/options.py
+++ b/libresvip/plugins/ust/options.py
@@ -1,9 +1,8 @@
-from gettext import gettext as _
-
 from pydantic import Field
 
 from libresvip.model.base import BaseModel
 from libresvip.model.option_mixins import EnablePitchImportationMixin, SelectSingleTrackMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(EnablePitchImportationMixin, BaseModel):
diff --git a/libresvip/plugins/ustx/model.py b/libresvip/plugins/ustx/model.py
index 1ea6c9121..1334fb398 100644
--- a/libresvip/plugins/ustx/model.py
+++ b/libresvip/plugins/ustx/model.py
@@ -6,10 +6,11 @@
 from types import SimpleNamespace
 from typing import Annotated, Literal, Optional, Union
 
-from pydantic import Field
+from pydantic import Field, field_validator
 
 from libresvip.core.constants import DEFAULT_BPM, TICKS_IN_BEAT
 from libresvip.model.base import BaseModel
+from libresvip.utils.audio import audio_path_validator
 from libresvip.utils.music_math import linear_interpolation
 
 ParamType = SimpleNamespace(
@@ -193,6 +194,8 @@ class UWavePart(UPart):
     skip_ms: float = 0
     trim_ms: float = 0
 
+    validate_relative_path = field_validator("relative_path", mode="before")(audio_path_validator)
+
 
 class USTXProject(BaseModel):
     name: str = "New Project"
diff --git a/libresvip/plugins/ustx/options.py b/libresvip/plugins/ustx/options.py
index 9611e16c9..fe60c41e7 100644
--- a/libresvip/plugins/ustx/options.py
+++ b/libresvip/plugins/ustx/options.py
@@ -1,5 +1,4 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
@@ -8,6 +7,7 @@
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class OpenUtauEnglishPhonemizerCompatibility(Enum):
diff --git a/libresvip/plugins/ustx/ustx_converter.py b/libresvip/plugins/ustx/ustx_converter.py
index ae813a1ae..933883c86 100644
--- a/libresvip/plugins/ustx/ustx_converter.py
+++ b/libresvip/plugins/ustx/ustx_converter.py
@@ -14,7 +14,7 @@
 class OpenUtauConverter(plugin_base.SVSConverterBase):
     def load(self, path: pathlib.Path, options: InputOptions) -> Project:
         proj_text = to_unicode(path.read_bytes())
-        ustx_project = USTXProject.model_validate(load_yaml_1_2(proj_text))
+        ustx_project = USTXProject.model_validate(load_yaml_1_2(proj_text), context={"path": path})
         return UstxParser(options).parse_project(ustx_project)
 
     def dump(self, path: pathlib.Path, project: Project, options: OutputOptions) -> None:
diff --git a/libresvip/plugins/ustx/ustx_generator.py b/libresvip/plugins/ustx/ustx_generator.py
index b6c289602..a85ef78ff 100644
--- a/libresvip/plugins/ustx/ustx_generator.py
+++ b/libresvip/plugins/ustx/ustx_generator.py
@@ -127,7 +127,6 @@ def generate_wave_part(os_track: InstrumentalTrack, track_no: int) -> Optional[U
                 name=os_track.title,
                 track_no=track_no,
                 position=os_track.offset,
-                file_path=os_track.audio_file_path,
                 relative_path=os_track.audio_file_path,
                 file_duration_ms=track_info.duration,
             )
diff --git a/libresvip/plugins/ustx/ustx_parser.py b/libresvip/plugins/ustx/ustx_parser.py
index 6ccb0f62d..8e1dd5b45 100644
--- a/libresvip/plugins/ustx/ustx_parser.py
+++ b/libresvip/plugins/ustx/ustx_parser.py
@@ -186,11 +186,10 @@ def parse_wave_parts(
         if self.options.import_instrumental_track:
             for wave_part in wave_parts:
                 ustx_track = tracks[wave_part.track_no]
-                rel_path = wave_part.relative_path
                 # duration = wave_part.file_duration_ms - wave_part.skip_ms - wave_part.trim_ms
                 track_list.append(
                     InstrumentalTrack(
-                        audio_file_path=rel_path,
+                        audio_file_path=wave_part.relative_path,
                         offset=wave_part.position,
                         title=wave_part.name,
                         mute=ustx_track.mute,
diff --git a/libresvip/plugins/vog/options.py b/libresvip/plugins/vog/options.py
index 6b3258ab7..d362ed612 100644
--- a/libresvip/plugins/vog/options.py
+++ b/libresvip/plugins/vog/options.py
@@ -1,8 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import StaticTempoMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class InputOptions(BaseModel):
diff --git a/libresvip/plugins/vpr/model.py b/libresvip/plugins/vpr/model.py
index 2a888e1fc..75ac11a6e 100644
--- a/libresvip/plugins/vpr/model.py
+++ b/libresvip/plugins/vpr/model.py
@@ -1,11 +1,11 @@
 import enum
 from dataclasses import dataclass
-from gettext import gettext as _
 from typing import Annotated, Literal, Optional, Union
 
 from pydantic import ConfigDict, Field
 
 from libresvip.model.base import BaseModel
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class VocaloidLanguage(enum.IntEnum):
diff --git a/libresvip/plugins/vpr/options.py b/libresvip/plugins/vpr/options.py
index 3e424294d..0a9b5be67 100644
--- a/libresvip/plugins/vpr/options.py
+++ b/libresvip/plugins/vpr/options.py
@@ -1,11 +1,10 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 from .model import VocaloidLanguage
 
diff --git a/libresvip/plugins/vshp/options.py b/libresvip/plugins/vshp/options.py
index 36caa6c81..ccd70abfc 100644
--- a/libresvip/plugins/vshp/options.py
+++ b/libresvip/plugins/vshp/options.py
@@ -1,7 +1,7 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class InputOptions(BaseModel):
     wave_to_singing: bool = Field(True, title=_("Convert wave pattern to singing pattern"))
diff --git a/libresvip/plugins/vsq/options.py b/libresvip/plugins/vsq/options.py
index 8777af83a..7384c4944 100644
--- a/libresvip/plugins/vsq/options.py
+++ b/libresvip/plugins/vsq/options.py
@@ -1,10 +1,10 @@
 from enum import Enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import EnablePitchImportationMixin
+from libresvip.utils.translation import gettext_lazy as _
 
 
 class BreathOption(Enum):
diff --git a/libresvip/plugins/vsqx/enums.py b/libresvip/plugins/vsqx/enums.py
index 4fe46db42..5337e3580 100644
--- a/libresvip/plugins/vsqx/enums.py
+++ b/libresvip/plugins/vsqx/enums.py
@@ -1,9 +1,10 @@
 import enum
-from gettext import gettext as _
 from typing import Annotated
 
 from pydantic import Field
 
+from libresvip.utils.translation import gettext_lazy as _
+
 
 class VsqxVersion(enum.IntEnum):
     VSQ3: Annotated[int, Field(title=_("VSQx 3"))] = 3
diff --git a/libresvip/plugins/vsqx/options.py b/libresvip/plugins/vsqx/options.py
index 9ffa0df59..116b47354 100644
--- a/libresvip/plugins/vsqx/options.py
+++ b/libresvip/plugins/vsqx/options.py
@@ -1,11 +1,10 @@
-from gettext import gettext as _
-
 from pydantic import BaseModel, Field
 
 from libresvip.model.option_mixins import (
     EnableInstrumentalTrackImportationMixin,
     EnablePitchImportationMixin,
 )
+from libresvip.utils.translation import gettext_lazy as _
 
 from .enums import VocaloidLanguage, VsqxVersion
 
diff --git a/libresvip/utils/audio.py b/libresvip/utils/audio.py
index 54bedd679..07df6edf3 100644
--- a/libresvip/utils/audio.py
+++ b/libresvip/utils/audio.py
@@ -3,9 +3,22 @@
 import platform
 from typing import Optional, Union
 
+from pydantic import ValidationInfo
+
 from libresvip.core.warning_types import show_warning
 from libresvip.utils.translation import gettext_lazy as _
 
+
+def audio_path_validator(path: str, info: ValidationInfo) -> str:
+    audio_path = pathlib.Path(path)
+    if not audio_path.is_absolute() and info.context is not None:
+        project_path: Optional[pathlib.Path]
+        if (project_path := info.context.get("path")) and not hasattr(project_path, "protocol"):
+            audio_path = (project_path.parent / path).resolve()
+            path = str(audio_path)
+    return path
+
+
 if platform.system() != "Emscripten":
     from pymediainfo import ET, MediaInfo
     from pymediainfo import Track as MediaInfoTrack