No sound from a real instrument in GarageBand '09
I used to have no problem plugging my guitar or electronic drum in my old eMac and select new track with MONITOR ON AND then I could hear myself play trough the Mac's speakers. Now with this new garage band, all i'm getting is lots of high pitch feedbacks!!! Please help! I feel like I've downgraded from the iLife 2005 Garage band i was using!
iMac, Mac OS X (10.5.6)