If I fast forward or rewind through a track and press pause, then the 
squeezebox gets very confused when it comes out of pause mode.  It still skips 
through the track, but reports that it is in normal speed.  A way to get out 
of the state is to scan again, then press play to end the scan.

Pressing pause should return the playback speed to normal, like play does.

If the fast forward implementation is changed in the future (various 
enhancement requests, such as 1592, 1649, 1911) to be only whilst the key is 
held down, then this problem would go away.  These are not due until 6.5 
though, so perhaps this PR may be minor enough to slip in before tackling 
those.

For now I keep getting in a bit of a state because I have other handsets where 
the play button is between << and >>, so I find I sometimes press pause 
instead of play on the SB remote.