Wacky sounds on my computer

[katsmaddy]

Hi. I hope that someone can help me. I had Limewire and upgraded to Limewire Pro. I don't know if that has anything to do with my problem but out of nowhere all of the time, it sounds like an extreme sports channel is playing in the background no matter what I am on. I hear people talking about pranks and bmxing and I have no idea where this is coming from. I have McAfee and I done all of the scans that I could do, I have emptied my cookies and old files. I have a 8 year old daughter who is on the computer alot and whatever this is has cursing in it and I cannot get rid of it. My question is could I have downloaded a song from limewire that had a virus on it? Or where did this come from? And finally, how do I get rid of it? Also my computer is running slow and I have a lot of pop ups. PLEASE HELP!!!!!