I spend a lot of time doing amateur recordings on my desktop. Nothing fancy, just one track guitar and vocals (don't have the hardware for multitrack recording). I used the freeware "Audacity" to record. I was wondering on some recommendations for something a little more professional but still light and simple to use. System specs are: G4 1.33 ghz Powerbook G4, 1gig ram, 500gig external hard drive.