Need Help, music and graphics not together

[2shadow]

I have a gateway notebook MX7525,

Operating System:MS Win XP with sp#2

Processor: Mobile AMD Athlon 64 processor 4000+

Memory: 1024 MB DDR

Video: ATI Mobility Radeon X600

HD: 100GB

I have converted all my cdg to kma's. Sometime they start and play fine. other times the music starts way befor the graphics do and they never catch up with the music. So if someone where to try and sing they would end up singing about 10 seconds behind the music.

Weird thing is it only does it sometimes. But I can't find any reason for it to start or stop it. And as it is I can't us this can't us this computer for my shows untill I can get it to work,without fail.

Any help would be great.

Thanks, Tim Baker