I've managed to use 2 different cheap universal remotes, they are a little more bulky than the pentax one, but what the hell. (note get the ones with the different codes for the different devices) one of the codes that works is one coresponding to a sony cd player.
sorry about the wierd links, these were the best online pictures i could find at short notice.
this one:
http://www.hanizoz.co.il/newStore%5C...350&height=350
and this one (not as good):
http://www.photonegba.co.il/pictures...6154819(1).jpg