bookmarks about android audio output device selection

lineout 聲音

http://forums.wandboard.org/viewtopic.php?f=11&t=410
http://forums.wandboard.org/viewtopic.php?f=11&t=777
https://groups.google.com/forum/#!topic/wandboard/r6gF4UrXc0U
https://boundarydevices.com/hdmi/
https://groups.google.com/forum/#!topic/wandboard/0CctR_VjdlE