Music Maker Jam for HP

I really like this software. It's an amazing way to make music and all, and anyone stumbling across this message; if y'all into making easy music, this might be for you. but I just wanna know: how do you turn it into an mp3 file? I really want to put my song in youtube, assuming copyright doesn't complain, but it wont let me find the file! :( any suggestions?

on facebook it said there have been many new music sections released for music maker jam but the windows 8 hasn't gotten any of the updates

This is an amazing powerful app!