Okay I should start off by saying sorry if this isn't in the right section.

I was wondering why I can't record sound anymore on You tube! Usually when I use quick capture (from You tube > upload) I can record sounds. I've made videos in the past on You tube using quick capture, but recently my Firefox has turned into SLOW-FOX and I have to keep refreshing pages. AND I can't record videos anymore on You tube, it captures the picture, but no sound. How can I fix this? I'm sure the mic on my webcam works because I've tried using Windows Sound Recorder and it's fine. How can I fix this?

Thank-you in advance.