GarageBand does not recognize my electric guitar
I am trying to connect my electric guitar using the audio-in in the back of my imac. I am not using any devices between my guitar and computer, and instead am trying to connect using a 1/4" Stereo Female to 1/8" Stereo Male plug adapter. I have also changed my GB Preference to Audio-In under the "Audio Midi" section. When I try to choose an amp and edit, the only input source options I get are "Mono 1 and 2(Built in mic), along with Stereo(Built in mic).
Obviously I'm doing something wrong. Not looking for professional sound, just more than the built in mic sound. Any help would be appreciated. Thanks.
IMac 5.1, Mac OS X (10.5.6)