Things of interest here:
Also check out my latest project that mutes your music when watching videos automatically: mute.fm. Please sign up to beta test. :)
You may also be interested in a Chrome extension that makes it easier to find out which tab is making a sound and that provides browser-wide granular audio controls: MuteTab
Finally, if you would like to donate money to me, go here.
The best way to contact me is to send an e-mail to my name at gmail.