OS X should be able to read most any format your PC can throw at it, but if your mac cannot read it, and the PC has problems halfway through, it's probably a hard drive going. Try running the
diagnostics to see if it finds any problems.
__________________
Power to Burn.
At speeds of up to 733MHz,
The most powerful Mac in history
burns CDs, burns DVDs, and
burns Pentiums
- apple website, oct 4, 1999. advertisement for the powermac g4