So yet another issue in Skippy's PPC world. I go to plug in my guitar this morning, and an issue that's happened a couple other times that's been fixed happens. I get this loud screeching feedback fixed by selecting the guitar as the input. Well, today, I tried that same thing, but my guitar doesn't work in Garageband as the line in, and there's no line in under System Preferences to select like there should be. I called Apple, and the guy I got told me it may need to be looked at, after a few of his tricks of resetting PRAM or PMU (I forget which), unplugging misc. unneeded things, updating, restarting, etc. Well, calling the Apple Store in Syracuse, I got a guy that said it may be a bad connector or something. He may need to order parts, and may need to keep it a while. On top of it being awkward to bring there and back, it is my main desktop... Im trying to avoid this. Any solutions, oh fellow MacRumorites?