"<Channels>2</Channels>"
"<FirstAudio>0</FirstAudio>"
"<Mapping>"
- "<ContentChannels>2</ContentChannels>"
+ "<InputChannels>2</InputChannels>"
"<OutputChannels>12</OutputChannels>"
"<Gain Content=\"0\" DCP=\"0\">1</Gain>"
"<Gain Content=\"0\" DCP=\"1\">0</Gain>"