As requested, I've added a prefpane that allows for automatic enabling of the remote control when Songbird starts.
Just look in the options/preferences window for the new option (under Mac Remote Control).
Added support so that the play button will always start playback (doesn't require a sequencer to be loaded).
Converted the extension to work with the new playback API!!!!
This extension should work for all 1.0.* - 1.1.* Songbird versions.
Have fun!