To process all audio formats supported by Audio Player, it can be necessary to add unknown formats to Nextcloud and ownCloud, in case they are not included in the current version yet.
Playing the formats supported by Audio Player depends on the browser.

By default Nextcloud and ownCloud are distributed with resources/config/mimetypemapping.dist.json. Do not modify this file, as it will be replaced when Nextcloud or ownCloud is updated.

Create a config/mimetypemapping.json file and add your required MIME types.

After that some internal tables need to be updated with the following occ commands:

• ./occ maintenance:mimetype:update-db --repair-filecache
• ./occ maintenance:mimetype:update-js.

{
	"flac": ["audio/flac"],
	"m3u": ["audio/mpegurl", "text/plain"],
	"m3u8": ["audio/mpegurl", "text/plain"],
	"m4a": ["audio/mp4"],
	"m4b": ["audio/mp4"],
	"mp3": ["audio/mpeg"],
	"ogg": ["audio/ogg"],
	"opus": ["audio/ogg"],
	"pls": ["audio/x-scpls", "text/plain"],
	"wav": ["audio/wav"],
	"aac": ["audio/aac"]
}

{
	"webm": ["audio/webm"],
	"wma": ["audio/x-ms-wma"],
	"xspf": ["application/xspf+xml", "text/plain"]
}

To evaluate your browser capabilities, go to the settings of Audio Player, located in the hideable navigation on the left. In the lower area of the settings it shows the MIME types not supported by your current browser.
In case your browser does not support a MIME type which is indexed by Audio Player, the title is still shown in playlists, will be highlighted in a different font style and can not be played. On the sharing page you will see a hint about the unsupported MIME type instead of the Share Player.
Displaying of the embedded cover art – especially on the sharing page – depends on the preview function of the cloud and the graphics capabilities of the server.

• FLAC audio format is supported since Mozilla Firefox 51 and Google Chrome 56.
• From version 6.0, Samsung Internet (SamsungBrowser) supports FLAC because it’s based on Chrome 56 or higher.
• Although Opera Browser is not actively supported, FLAC support is enabled since version 43.