No Sound plays while Plugin is active
Hello. I am using Windows 7 (64 bit I believe) with Firefox 35. For some reason whenever I have the "Shockwave Flash 16.0.0.257" plugin activated, there isn't any sound coming out of my spreakers or headphones. This issue has been going on for some time now, and has a problem with all websites, including Youtube, Gamespot, and Twitch. Curiously, whenever I deactivate the plugin, the sound works just fine for Youtube, but most other sites will demand that I activate the plugin, and then no sound plays. Also rather odd, Youtube videos still play while the plugin is deactivated, just without the sound. Early on, I could fix this somewhat by turning up the computer's volume way up, but that doesn't seem to help anymore.
Can I have some help with this? Thank you in advance.