Read from singer's disk while another singing?

[billykeys]

When I try to read a song from a CDG to the 'temporary' file, if another singer is performing at the same time, the audio becomes garbled/choppy until disc access completes... I should be able to do that right? (I tried it on my desktop at home, and it seemed to work fine.) Are there settings on my laptop I should double-check (DMA, etc)? The laptop is a Dell Inspiron purchased from MTU, a few years back. Interestingly, the CD drive in my desktop is NOT MTU certified...