An odd one! Except
for Youtube, every audio or video clip that I play works perfectly whether from a browser, Media Player or any other source - both L & R audio channels present and in balance.
Youtube has suddenly decided to play only
the Left audio channel - it's not simply unbalanced - it just isn't there. This applies to every
Youtube clip that I play from the browser link, and is the same in both IE9 and Firefox. If I download the clip and play it through (any) media player, it's fine.
I've checked all the audio settings - is there something I've missed?