I have a Pyle USB cassette tape deck that needs this codec also to work with Audacity.I'm out of luck with the USB connection and have to connect it via RCA plugs to miniplug into Line In.
I have come to the conclusion that this codec only worked on Macs that used PPC chips,not Intel Macs.Apple must have dropped it when switching to Intel.No where on the net can I find anything about this codec on newer mac OS's and newer intel Macs.
Judging from this user's comment below and others,they are working with OSX10.4 and PPC's like G3,G4 and G5.Also later versions of Mac OSX that had support for PPC's like the first Mac Pro.
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In Audacity prefs, I selected:
"USB Audio CODEC" for both Input and playback.
Mac is a 533Ghz g4 (Digitial audio) running 10.4.11
It is plug into a USB port on back of machine.
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Attached is a screenshot from Audacity and it shows the USB Audio Codec. I was pulling my hair out,wondering why I couldn't see it in my audio sound setup in OSX 10.6.8 on my black Macbook.I couldn't find it in my system anywhere.This attachment showing the codec installed MUST have been done on a PPC G3,4 or 5. Nowhere does it exist on Intel Macs.
Disregard the red circle.