Progressbar breaks when playing m4a's.

[brotatos]

The progressbar no longer shows how far the song has been played or the final date.

The entire duration of the song is, however, known when looking at the playlist.

[devsnd]

Thank you for reporting this bug. This is a duplicate of #275

We still have to figure out how to transcode music for chromium so that seeking does work, since chrome relies on http-partial-requests to stream music over http, but we're delivering the streamed "file" as a whole right now.

The only way to seek within transcoded tracks as of now is to use firefox.