I mean like put parts of songs into one whole song...I am doing a cheerleading program and I want to put all different parts of different songs into one song for there dance....
try downloading Audacity (just google it). It's a great FREE and easy to use program that lets you combine songs and alter mp3's. A lot of podcast producers use it.
Find a local club DJ more than likely he'll have the software already and will now how to put together clean transitions for you. I've done it myself for a few cheeleading services here in L.A.. So ask around wherever you live. A lot of DJ's love doing that kind of stuff. Good luck.