Ok - here's the deal.
I have an electric guitar and an iMac. I want to use Garage band to do some basic home demo recordings, nothing fancy, just a few overdubs of guitar and bass tracks to show songs to band mates.
I have tried using an adapter taking my guitar's 1/4" cable down to a headphone jack so I can just plug into the computer. When I do I get a little white noise but that is it. I can't hear the guitar at all and there is no signal being recorded.
What in the name of High school football am I doing wrong here?
A few people have told me (and my bits of intrewebz research back this up) that I must get a preamp, guitar modeler or some other interface to boost the signal; ie, something that goes between the guitar and the computer. I've been pointed towards $500 "Guitar Rig" (I definitely do not need that), a headphone jack adapter with a built in preamp just for this purpose (supposedly Radio Shack or the Apple Store has them?) and everything in between.
Before you ask - 'so why hasn't he just gone to Radio Shack or the Apple Store already?' my friend who does tons of home recording, all with Macs, just told me he's plugged straight into his Macs with no problems. He said he sometimes needed to bump the audio level settings up on his computer but after that he was good to go.