I'd just like to clear up an issue that a couple of people have posted here concerning MP3 limitations with this product. I believe the built in MP3 encoder only has 20 uses before you have to register it. However, you can still output to .wav as many times as you like.Some people have mentioned that there is encoding in the output .wav file that stops you creating an MP3 file from it using a 3rd party program.Well, I've just tried creating a .wav in Guitar Tracks 2, creating an MP3 from it in cdex (freeware), then playing it in winamp (freeware also). I had no problems at all.My point is this - there is no MP3 limitiation with this product so don't let it put you off buying it because is it's fantastic!!...