I am looking to connect my MBP directly to a guitar amp to output sound from Reason and Garageband to the amp. I have searched the forums and most of the threads I have found have to do with getting audio into your Mac for recording purposes. I want to go the other way so that I can jam with some friends. I have tried adding a 3,5mm adapter to a 1/8" guitar cable and plugging into my audio out jack but with no success. So my question is: 1: Have any of you guys been able to do this? Is there any special hardware needed? 2:Is there any risk of power traveling the line and frying my MBP? Thanks!