I AM ANGRY. I just went through Black Friday madness and bought a pair of $150.00 Bose AE2 headphones and they don't work on my iMac. The headphone jack keeps switching to Digital Out instead of microphone and says "The selected device has no output controls." Now the headphones that worked no longer do. AARRGGGHHH. I just bought this iMac in August!!!! How does the audio port go bad in 90 days!!