Thank you very much wellef for this nice piece of software.
Don't you think could be useful to add the FMtransmitter toggle on/off? I use it pretty often and there's actually no way to toggle it by using service buttons.

In my case the optimal would be to toggle between:
pause mediaplayer + turn off FMtransmitter <--> turn on FMtransmitter + resume mediaplayer

Would you consider that?