Hi. I have a friend going to Univiersity. I am encouraging him to buy a 12" PB. He is a musician. Plays guitar, sings, etc. He will want to do some recording, etc on his mac. Can anyone recommend best way to go about getting guitar and mic input to the PB. Needs to be price sensitive. I've seen a couple of breakout boxes on TechTV before, just cant remember the names. Something for less then $100 and could take a few inputs, etc, would be great. He will just use whatever software comes with PB (Garage band). Thanks in advance.