So I've got a bunch of tracks (about 7 albums worth) that's only a total of 450MB - so should fit on a CD to play on an MP3 enabled car stereo. But when I try to burn it via WMP it just burns about an albums worth as a regular audio CD.

Is there a setting somewhere to change it?

I have Winamp as well if that's helps.......

You want to use an ordinary burning app like Nero and burn them as a CD-ROM

Ahhhh - that simple eh?

Presumably ok just to use the WinXP 'Write to Cd' function then.....

I burn them in Nero or Wincd Creator as data cd's. Drag and drop them and away they go.

its fine to do use xp's "write to cd"