So I installed the flash plugin for Mozilla, which I believe I recall working a little while, but now I can video from flash files but no audio. I originally used the yum command "yum --enablerepo=flash install flash-plugin" to install it, and reran that command in case I had changed some setting on my browser. This did not bring back the audio. I also tried running "yum update flash" and other comparable commands, only to get the response: Nothing to do. Apparently the plugin is up to date, it just doesn't seem to be working. Thanks for any suggestions.