Okay, I've now tried
Jaksta for Mac, and it doesn't seem to actually work. Have you got it working?
I open the Jaksta program, click on the Start button, start playing a song in Grooveshark, and the Jaksta status window goes into "monitoring" mode. But nothing happens with Jaksta after that.
I am using the demo version of Jaksta for Mac 1.0.0, but it is supposed to actually work in a limited capacity. I'm on Mac 10.6.6, Snow Leopard and Firefox.
Thanks for any tips.