Fix incorrect play/pause button IDs
Fix incorrect play/pause button IDs

When using "listen again" radio player links such as:
http://www.bbc.co.uk/radio/player/b0675n1t
... the exposed buttons are #play and #pause

When using a live link, such as:
http://www.bbc.co.uk/radio/player/b0675n1t
... the exposed buttons are #play and #stop, but #pause does what we
want anyway

berrberr/streamkeys,nemchik/streamkeys,alexesprit/streamkeys,nemchik/streamkeys,alexesprit/streamkeys,ovcharik/streamkeys,berrberr/streamkeys,nemchik/streamkeys,ovcharik/streamkeys,berrberr/streamkeys