So a quick post here. If you want your Serviio instance to push 16-bit, 2 channel LPCM audio to your DLNA client or renderer, you need to configure your audio profile like this:
<Audio targetContainer="lpcm" aSamplerate="48000" aBitrate="1620">
Basically, aBitrate=”1620″ for LPCM means 16 bit 2 channel. The default (as of this writing) appears to be 192, which makes no sense, and gives you horrible 1-bit 2 channel LPCM.
If you need help with editing the audio profile, read this slightly technical article: http://www.serviio.org/index.php?option=com_content&view=article&id=16
Now go have fun 🙂