Thanks for providing the backing tracks, that is awesome. Now I have a question. I have a MR-8 for recording myself. I can easily play the backing tracks on my PC and play them through my PC speakers. While the backing track is playing, I can do my thing and record what I am doing on the MR-8. I will then have a WAV file that I can manipulate on my PC.
I can convert the WAV file to MP3 with out any trouble.
So how do I take the WAV or MP3 file and mix in the MP3 backing track to make a completed song?

What software should I get?