When playing video clips in WMP (o/s is Vista) some of the files play with sound, but others will not. When I looked at the properties of the files, the ones which were playing with sound all had audio bit rates under 128kbps while all the ones which weren't playing were all 128kbps and higher. Also have been able to run the files with no problems on my other computer (o/s windows xp).
Have also just tried the files in Real Player and Winamp with no success.
All the sound controls I've checked are not muted.
Any help much apprecitated.