Song player for admin page stutters and fails

[Bevinsky]

The player on the database and pending songs pages is not really very good; it stutters (yes due to UI thread blah blah), occasionally fails to play songs, and has issues with seeking. The old player, based on jPlayer never had these issues.

I suggest that the player is set up as following: If it's FLAC, use flac.js. Otherwise, use jPlayer. There's really no need to use a spotty JS implementation of MP3 decoding when browsers (and flash (suck a duck)) can handle it perfectly well.

This setup should only result in messy code if proper generalizations are not made. All you need is a generic interface for starting, stopping, loading and unified callbacks.