I plugged my beige g3 into my Onkyo reciever just fine via the av rca outputs... and my god does it sound awesome http://forums.macnn.com/cgi-bin/smile.gif

The hum you are hearing is probably a bad cable or connection on one end. And hopefully its not a problem with your Mac's audio out port....but just so you know it does work, and …

It could be a grounding issue... if you search for 'stereo' in the iMac forum you will find extensive information on how to get rid of the hum.

Ive done this before, and I bet your problem isn't any of the aboce mentioned ones. You need to push in the mini-jack far into the line out jack (headphone) If it doesnt get all …

It still might be a grounding issue (pretty sure, if you get a 60Hz hum--if not, then surely not). I won't go into explaining the whole physics of it again, but you need to buy a…