In the Format menu in preferences, it lists "cd quality lossless", "cd quality
lossy" and "voice",_not_ "FLAC", "Ogg Vorbis" and Whatever the last one is, as I
contest it should at least mention, even if your going for the more intuative
interface.  
The fact that I do not even know what the last format is should be an indication
of what not providing this information causes as a problem.  People might rip
their entire library to FLAC, thinking they got a library of Super OGG's and
then try to play them on a player that doesnt suport flac.  

Other information:
I am using the Hoary ubuntu version.