I don't think I quite agree with you... As you can see from the therad you link, there is a possibility of sampling from the "output". Which means that you could have a "process"
- Allways recording, for instance a minute of sound, and "looping", so that it allways has the last minute of radio-sound on disk (or maaaybe even in memory). When I "press the magic button", it continues to record to the end of the "buffer", but stops "deleting" from the start of the "buffer", and when I press again (or when it detects an end-of-song). It is stored as a track. I should then be able to retrieve and edit on the PC and then put it back onto the player in wav or MP3 format. It could maybe even be converted to mp3 in "idle time" on the player.

Disadvantages:
Needs disks mounted RW
Needs manual edit of the songs
Needs "retrieval" function
Needs allways spinned-up drives.
Will do intense all-the-time disk writing which may "wear" the drives more than neccessary

Marius (Escort Cab + Mark II)