Actually, no it doesn't allow you to do that.

If it did, we'd have had time-shift of radio on the wishlist. The tuner only outputs MPX (left/right/rds all in one signal) and this doesn't go into the sampler. The left/right extraction happens in the DSP, and can only happen when in tuner mode - ie, you can't listen to MP3 and sample the tuner.

The one way around this is to have an external board that plugs between the tuner and the main unit, and contains a FM demultiplexer whose output you hook up to aux in - as you can sample aux in whilst playing mp3s, this would work fine.

You *can* record tuner output, but only whilst listening to it. As the output sampled is the DSPs output, resolution will be affected by the volume you're listening to the tuner at.

Yes, it's a hardware limitation, but not one we could do much about without more hardware...

Hugo