It would rock if there was an in-game ogg player so that I could play my own music at the same level as the rest of the game audio.

drop your .oggs into the game folder, type /playmusic <filename>

or make an m3u playlist and type /playlist <filename>

You can actually have the playlists/music anywhere on your computer as long as you use absolute paths in the commands. IE:

/playlist "/home/roguelazer/UberMusicPlayList.m3u"

Okay, but I was thinking more along the lines of the UT2004 Ogg player.