It's been a couple of releases since I've been able to use Amarok on Linux but I'm hopeful they will eventually fix it.

Currently, I start up Amarok and the menus work but I can't select an options in the "Sources" panel to select music.. library, Internet, Files, etc... the whole panel is unselectable. I can select menu's configuration, rescan collection, etc...

start be renaming your amarok directory and rc files to see if there's a corruption in a file

when posting a request for help it helps to provide the versions of your distro and kde

also, upgrade to 2.4.0