[Bug]: Track position slider when playing AAC files doesn't work

[zkallan]

I have already checked through the existing bug reports and found no duplicates

• Yes

App Version

1.8.0

Music Server and Version

Navidrome 0.60.3 (34c6f12a)

What local environments are you seeing the problem on?

Web Firefox, Desktop Linux

What happened?

When playing .aac files, the position slider for the song:

• Doesn't automatically move to track the song's elapsed time.
• Can't be dragged to another position to skip nor rewind.
• Happens on both, basic slider and waveform slider.

Tested web interface from docker image (ghcr.io/jeffvli/feishin sha256:228d76f3e8347960f7484a40626be8e892f48c108350fdd0ea36e093f6668735) Feishin v1.6.0 on Firefox 148.0 on Kubuntu 22.04.5
Tested desktop AppImage v1.8.0 on Kubuntu 22.04.5

To rule out problems with the music files themselves, other third party interfaces with the same music server were also tested without issues.

Attachment is an example ACC encoded file.
07 Stan LePard - View From the Canopy.tar.gz

Steps to reproduce

1. Open Feishin.
2. Play an AAC encoded music file.

Relevant log output

[jeffvli]

The problem is that Navidrome is reporting the following: "duration": 0

I would recommend re-encoding to a different format.

Edit: Technically the web player can report the correct duration of the file (as seen with the Navidrome WebUI), but I'd rather follow the server-specified duration.

Here's the full song response:

{
    "bookmarkPosition": 0,
    "id": "DTY1u1Qs0ApkKMCTnL29iE",
    "libraryId": 1,
    "libraryPath": "/music",
    "libraryName": "Music Library",
    "folderId": "2lOP4SYtQQReLvcbPEKGuM",
    "path": "!NSP/07 Stan LePard - View From the Canopy.aac",
    "title": "View From the Canopy",
    "album": "Guild Wars 2: Heart of Thorns Original Soundtrack",
    "artistId": "7wfizVIP9A71Uf9J32WuUF",
    "artist": "Stan LePard",
    "albumArtistId": "6tf9PHkIjNqn8fnvdluXyz",
    "albumArtist": "Maclaine Diemer, Lena Chappelle & Stan LePard",
    "albumId": "64qdz8H0VhM4jXoblwtXwh",
    "hasCoverArt": true,
    "trackNumber": 7,
    "discNumber": 1,
    "year": 2015,
    "date": "2015-12-15",
    "originalYear": 2015,
    "originalDate": "2015-12-15",
    "releaseYear": 2015,
    "releaseDate": "2015-12-15",
    "size": 1953026,
    "suffix": "aac",
    "duration": 0, # This value here!
    "bitRate": 0,
    "sampleRate": 44100,
    "bitDepth": 0,
    "channels": 2,
    "genre": "",
    "sortArtistName": "LePard, Stan",
    "sortAlbumArtistName": "Diemer, Maclaine, Chappelle, Lena & LePard, Stan",
    "orderTitle": "view from the canopy",
    "orderAlbumName": "guild wars 2: heart of thorns original soundtrack",
    "orderArtistName": "stan lepard",
    "orderAlbumArtistName": "maclaine diemer, lena chappelle & stan lepard",
    "compilation": false,
    "lyrics": "[]",
    "explicitStatus": "",
    "mbzRecordingID": "8b26a76f-aeba-4274-abdd-f3e73c664513",
    "mbzReleaseTrackId": "cbf8b092-6e45-4d80-85e6-8dd40a163838",
    "mbzAlbumId": "0858bfd4-be61-4ad0-a2ff-609ff1ba53e6",
    "mbzReleaseGroupId": "0a86ffca-cb56-4d43-b506-49bceac4b1df",
    "mbzAlbumType": "album",
    "rgAlbumGain": null,
    "rgAlbumPeak": null,
    "rgTrackGain": null,
    "rgTrackPeak": null,
    "tags": {
        "asin": [
            "B019D9KBTI"
        ],
        "disctotal": [
            "1"
        ],
        "language": [
            "zxx"
        ],
        "media": [
            "Digital Media"
        ],
        "musicbrainz_workid": [
            "e3c61f1e-d51f-40c3-9806-17c4ffa99e5a"
        ],
        "recordlabel": [
            "ArenaNet"
        ],
        "releasecountry": [
            "XW"
        ],
        "releasestatus": [
            "official"
        ],
        "releasetype": [
            "album",
            "soundtrack"
        ],
        "script": [
            "Latn"
        ],
        "tracktotal": [
            "27"
        ],
        "work": [
            "View from the Canopy"
        ]
    },
    "participants": {
        "albumartist": [
            {
                "id": "6tf9PHkIjNqn8fnvdluXyz",
                "name": "Maclaine Diemer, Lena Chappelle & Stan LePard",
                "missing": false
            }
        ],
        "artist": [
            {
                "id": "7wfizVIP9A71Uf9J32WuUF",
                "name": "Stan LePard",
                "missing": false
            }
        ],
        "composer": [
            {
                "id": "7wfizVIP9A71Uf9J32WuUF",
                "name": "Stan LePard",
                "missing": false
            }
        ]
    },
    "missing": false,
    "birthTime": "2026-03-11T02:50:21.999088371Z",
    "createdAt": "2026-03-11T02:50:22.030691089Z",
    "updatedAt": "2026-03-10T16:29:16Z"
}