Fixed a typo in the importer that was causing an exception during import of albums with disc subtitles
Added file mime type to Track object in database and ensured that it is guessed at import type
Client now intelligently selects the desired format of a song that is selected for playback. We try to play the native format of the file whenever possible. If it isn't supported, we choose either ogg vorbis or mp3, depending on what is supported by both server and client.