This would be amazing...
You are listening to a "live" source through the aux in
like the radio and you want to pause what you are hearing
like you normally do when listening to mp3 playback...

Just hit the "up" button...
Audio is muted and the empeg starts recording.....
Un pause and pick back up where you were...
if you come accross a commercial that was recorded while paused...
just fast forward a la tivo dvr.
I don't beleive that that the audio stream could be recorded in mp3 format,
compression of mp3 could be slower than real time.
but even a medium quailty wav audio format would be great.

I am in no way qulified to even know where to start on this software
but it sounds like a simple enough application.
you'd need some read write disk space...
oops, is there sufficient hardware on board an empeg to actually record an audio stream...?
<brain explodes>

any one else?