Well i think i fiqured this one out... In the Output section set Split mode to 'By Chapter' this split the indivdual tracks when i ripped to mp3.
it ripped to mp3 ok but i got scratching noise on final output of all tracks (a pulse of about 8 scratches every 10 seconds or so) let me know if you get this, it could be a problem with my disk or drive??
Keep me posted on any advances