Just like the title asks: Can My iMac G4 10.3 output 5.1 Digital audio? My children bumped pro speakers off the desk and bent the jack. Instead of buying a new set I wanted make a completly new set-up. I have a really nice set of speakers and sub all I need is a new receiver. I wanted to upgrade to 5.1, We watch all our movies on the iMac. Thanks, I.