I can confirm that - what you suggested to the other user above - I had to refresh (I did actually restart Firefox) to make it work.
So once it works its a BRILLIANT helper! Thanks loads. Next upgrade could also include a compressor/limiter and a de-hummer (for all this bad audio quality conference talks, you know)
Anyway: VERY GOOD JOB, mate!
Claus

edit: after testing for some weeks, I just donated you some bucks. Great work. Dont want to miss it. Keep it up! ;-)

Awesome. I've been looking such an equalizer for a long time. Much more effective than all those fixed center frequency ones. Works flawlessly on OsX and firefox. Keep up the great work ! One suggestion - could you add the functionality that once set in a browser the output chosen could be mapped the audio output of the machine permanently? Even when the browser is not open and that all audio apps would have the same eq treatment? Thanks a million, Pete