sorry for the late reply but somehow your message ended up in
the spam folder.
Have you tried to update the Flash in Safari in order to get
Grooveshark working in the normal -- flash -- version? In order to
do this you have to open grooveshark.com in Safari and follow the
Flash update instructions (Shiny Groove and Safari share the same
system Flash plugin).
If it is not possible to update Flash - can you please explain
the problem so I can reproduce it? Does it don't un-pause
Grooveshark (HTML5 version) once put on pause?