[nq:1]I guess this is a little off-topic, but I figure someone here will know about it. [/nq] I don't know how much luck you'll have with Audacity, but at least it's free. You'll also want to make sure that the music you're using is cleared for use.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.