Anyone know how it works on the Mac?
Apple software uses CoreAudio -- which is billed as professional grade. Here are a few quotes from the doc I linked below:
Most Core Audio constructs manipulate audio data in linear pulse-code-modulated (linear PCM) format.... Core Audio generally expects audio data to be in native-endian 32-bit floating-point linear PCM format.Supported file and data formatsHere are the developer docs.
"I wish I had documented more…" said nobody on their death bed, ever.