I also like listening to Radio 4 Extra.
I record the programmes on my Freeview DVD recorder using SEP as only the sound is needed, (the sound is 128kbps AC-3 at this point)
I copy the VOB files to the hard drive on my computer and use:
http://www.mediacoderhq.com/start/we...819&build=5135
to make mp3 files at 128kbps, these are then copied to my mp3 player.
I end up with high quality audio that I play from the car radio on the way to and from work. (DAB Radio 4 Extra is in mono, Freeview is in stereo).
I always add a few minutes to the timer at the start and end of each programme because Radio 4 Extra does not transmit exactly as shown on the EPG.
I wish there was a radio with a timer that would record directly to mp3, but I find that my method does not take much of my time.