Download File Types

[the rox]

Alright, well now after christmas there are four different people in my family using Limewire and on 4 different Microsoft XP Home addition accounts. Everything was going fine before the last two members of my family got their Limewire and downloaded it off the limewire site. But now on all of our names and each of our Limewire's every time we search for a song it comes up as a WMP (windows media player) type of item. It's still an MP3 type but its the WMP little icon next too the song name. And when i transfer my completed download to itunes it goes in fine and when i plug in my ipod and it says updating....ipod update is complete or whatever it says, i think "alright then it worked i guess" so i take out my brothers ipod shuffle off the little USB adapter, put the headphones in and try to play a song that i just put on but i cant get any song to play. And none would play after fooling aroudn with it for a couple minutes. So i believe that the songs not playing has to deal with the songs now having the WMP icon next to it instead of the normal icon with the little note or whatever it is. So can someone help me out and tell me how to get my songs back to normal?