I apologise if this has been asked before I couldnt find out, but I want to put about 60 mins of Audio on a CD so that a normal CD player will pick it up and play it.
But also I want an autorun bit that pulls up an animation to go with 20 mins of the music if it is put into a PC.. Could anyone help me out on this please??

much appreciated, honestly..

Mixing the animation with the audio tracks will not be difficult, but autorunning the animated video audio/track may. As I see it the problem will result from the difficulty of Audio CD players to recognize Audio tracks if they are not in the first session of a multi-session CD.

You can get around this by recording a CD-Extra CD with 2 sessions. The first session will contain the audio tracks and the second session the data (an avi or quicktime video). However, the autorun files will also have to be in the 2nd session. The PC should ignore the 1st session and autorun the 2nd. But then you could have a problem playing the audio tracks on the PC.