Oddball question here - I have a line on a Pandora PXR4 - it's a tiny little 4 track digital recorder. What I'm wondering is if I can possibly use this thing as a multi-use device - for recording ideas, etc, but then also for use as a practice aid- plug my bass in and my MP3 player and jam along. Has anybody used a digital recorder of any kind to do this - even if it wasn't the PXR4. Does it work?? I don't have much money to spend, but want a recorder of some sort as well as a quiet practice aid. Thoughts?? thanks!