* amended action buttons alternatives
* in Player
	* ensure to properly handle audio protocols
	* if external client fails to build media source, break out early
	* pause video doesn't re-expand PlayDetailed
* disabled downloading SoundCloud media
* in Stream Composer
	* if attribute has a single option, show the option
	* fixed setting for muxed video
	* enabled audio streams when feed has no video
	* added protocol selection for audio streams
* amended layout of QueuePicker from widget
