There's many out there.
I'm interested in purchasing an audio editing program for Windows that will allow me to import music files (mostly MP3s) and edit their characteristics. I originally wanted to do this as a means of playing with a band when I did not have other people to play with.
Does anyone know of an audio editing program that will allow me to import prexisting audio files, but with multiple layers so that I may remove a specific instrument such as, drums, guitar, or even vocals?
I appreciated any help. Thanks in advance.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic