My wife watches horse racing replays via an embedded video player on the British racing website attheraces.com. When viewed from her user account via Internet Explorer 7, the sound has failed and the video freezes after a short time. However when my user account is used, everything is still working fine. The video format is as follows: Bit rate 440kbps, Video size 480 x 360, Aspect ratio 4:3, Audio codec WMA 9 48kbps 44khz mono(A/V) 1-pass CBR, Video codec WMV V7, Location http://level3.attheraces.com/ppv/atr/player_link.asp?set=231&channel=ARCHIVE&target=plu_2008_10_20_01_1420
OS is Windows XP SP2. I have checked the obvious like the advanced volume control settings to make sure nothing is muted and everything is turned up. Not sure what to try next. The problem occurred too long ago for System Restore to be of use.