Rated 4 out of 5 stars

Truly a time-saver.
May I ask you to add some functions? Shortcuts to repeat and shuffle would be nice and maybe an option to reset the playback controls to their default values (pretty please?)

This review is for a previous version of the add-on (1.5.5.1-signed). 

I might add them someday, but for now Grooveshark JS API doesn't have repeat and shuffle functions. :)