Just got my latest toy, a little solid-state mp3 player. It comes with no memory, but has an SD slot so it's infinitely expandable. SD is insanely cheap and getting cheaper all the time, so that's great. Pretty good for £13!
Now I'll just have to do some script hackery to automagically convert Ogg files to mp3 and copy them across, so I can quickly get music ready for my daily cycle commute.