i guss because wav is the moast abundant and popular lossless formatt that i can find on limewire, it takes less time to burn to cd , it takes less time to rip from a cd , i dont have an mp3 player so i just use my cd player .... i guss i dont know why i dont use somthing els ...i just like wavs . plus im not 100% shur if compression can be done without herting the sound at all .....i mean how can you take half of the data away and still have something that sounds exactley the same as the un-compressed version?? its moastley cuz wav is all i can find.