Here is an odd one. I have sound on my computer, I can play music and videos. I can also go to web sites to watch and listen to videos. There seems to be no problem with playing video and sound except on Youtube. I can play Youtube videos but hear no sound.
My system is Windows 7 professional. I updated flash and macromedia but it made no difference. I also am using IE, Chrome, and Firefox for browsers. Recently, I upgraded iTunes but I don't know if that is when the problem started since I haven't been on Youtube for awhile.
Do you have any idea why sound will play for anything and any site except for videos from Youtube?