I wrote a guitar song and recorded it but it sucks right now because I dont have a drummer. so i was wondering if there was a program that could take the mp3 file and allow you to put like drum beats in it. im using a program right now called hammerhead but it doesnt correspond (if you will) with the mp3 file I have to make the beats and play it with windows media player. I was wondering if there is a program like that. also im not willing to pay right now (or ever for a program) so if u know of a free one i would apreciate it.