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   AudioLogic High Level APIs
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Testing: (from project directory bindings)
 * start binder:  ~/opt/bin/afb-daemon --ldpaths=./build --roothttp=htdocs
 * connect browser on http://localhost:1234

 # Subscribe event for a given board
 http://localhost:1234/api/audio/subscribe?devid=hw:0

 # Increase Volume
 http://localhost:1234/api/audio/setvol?devid=hw:0&pcm=master&vol=50%

 # Get Volume
 http://localhost:1234/api/audio/getvol?devid=hw:0&pcm=master