Just make sure you re-download the latest version.
Even if you already have version 3.2 it was updated to handle the new way Grooveshark handles it's music.
Download it here.
http://www.1800pocketpc.com/groovefi...windows-mobile.
It works very well on the TP. I have been using it since it's inception.
It will not always play every result it finds but it is still the best option of it's kind.
Support the developer.