The Mk2 can do this, but only if it's playing the audio at the same time. The audio from the tuner comes into the system as FM-MPX (stereo multiplex) and so we couldn't sample stereo directly.

If you were happy with mono, you could split the harness to the radio module and hook it to an aux input, then record this :)

The original head unit in the European New Beetle has this as standard too.

Hugo