I have heard that Youtube is removing sound from some uploaded files that have copyrighted content within them...such as a popular song used as background music by someone who does not have permission of the artist or recording company to do so. That may be what you are experiencing.
Hi all, thanks for all the help and advice, but I guess it must be a problem with my AOL. I can get sound when I use internet explorer, but not with AOL. so maybe there is a setting or something that has been turned off.