Switch to using Phonon states everywhere instead of converting between engine states and phonon states. This makes amarok function more predictably due to a number of questionable behaviors Amarok underwent. In addition fix a few related bugs:

*) The context view would refresh the current setup when toggling from pause->play. this was not ideal.
*) The lastfm audio controller would break pausing when the last fm service was created. It listened for a StateChanged( Paused ) notification and told the engine to stop without checking whether the stream was a lastfm radio or not.

I've currently disabled this as It was pretty bad.