After long toil, I finally found a Firefox extension that puts the "signature" sound for all the different email addresses that I use (one of my own, a "job", one of CLUSIT , etc.).
The extension is fantastic, it's called Blank Canvas and is on the link
http://blankcanvasweb.com/pages/detail/id_9/n_gmail_signatures/
Try it!
The extension is fantastic, it's called Blank Canvas and is on the link
http://blankcanvasweb.com/pages/detail/id_9/n_gmail_signatures/
Try it!
