What sort of system resources do you have? To you have enough RAM? What sort of processor do you have? Could there be some sort of software conflict whereby both programs are trying to play the video at the same time? Try associating one program to play the video only.
Still weak, I know, but getting better:
CPU: AMD AthlonXP 2500+
1.8GHz @ 333 FSB
512 DDR 2700
160 GB westerndigital hd
Dual booted with XP/Fedora Core 5
PCchips M848A mobo
nVIDIA GeForce MX 4000 video Card
Associate\'s Degree in Applied Computer Sciences.
A+ Certified for Hardware and Operating Systems. Network+ Certified