I have always used itunes to listen and burn my music. I'm not sure if it has always been that way. I have a friend who uses real player to listen/burn her music (PC user) If you have itunes, try dragging the preferences file to the trash then relaunch itunes. When it asks if you wnat it to find all MP3 files on you hard drive, check yes and let it go throught it's motions. (you can always delete the mp3 files after it finishes.) Then you should be able to launch limewire into itunes. Itunes 2.0.4 is really nice. It has an equalizer that helps make tuens much better sounding. It is much nicer than the itunes that came with MAC OS 9.1.