Actually, I agree with Matt here. Something is wrong when Apple can move their icons around in the menubar, but no other 3rd party applications are allowed to. It makes the menubar behave inconsistently. Something I thought that Apple was trying to move away from with Leopard and Snow Leopard.

Oh well, as much as I loved the ability to move around SoundSource's menubar icon, I love the functionality so much more. It still sits proudly in my menubar. Even if it is obscured by other applications menubar items.