I have searched the forums and only found thread a couple years ago and don't apply to the new iMac's. I am into vinyl records (LP's) and currently have a Dell tower. My turntable is connected to my stereo receiver, when I want to record to my PC from my turntable I just use the "audio line in" from my receiver to my Dell tower line in. On the new iMac's they removed the "audio line in" so how would I connect audio into the current iMac? I know on the Mac Mini they still have the "audio in" on the back so that would work but what about the current desktop iMac?