<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ScottC:
The advantage of WMA is that it supports a variable bit rate instead of the fixed bitrate in MP3 helping you make smaller files.</font>
MP3 supports variable bitrate as well. Now, it's possible that not all players support reading it back, but it's certainly there, and sounds pretty good (I'm almost done with my project of converting all ~1200 of my CDs to 192kbps VBR MP3...)