Just because a CSPPC (or BPPC) machine is running OS4 doesnt suddenly mean its going to have a lot more processing power at its disposal so expect DvPlayer to run aswell as any other WOS movie player does under OS3.9. Perhaps fractionally better but not more than that...
Ive used DvPlayer on both my CSPPC and BPPC machinens and it works fine, I can watch simple VCD's with no problem... anything more and the machine runs out of horsepower, but that has nothing to do with OS4 or DvPlayer and everything to do with the fact that its still the same old CPU.