Questions About SDL Audio, Moving from OpenAL

I’m considering moving from OpenAL to SDL audio. While this will be a
bit more work on my part, SDL seems more stable in development then
OpenAL, especially going forward. I’ll be writing the audio processing
myself so I won’t be using the mixer, just straight SDL.

  1. When using more than one channel, are the samples interleaved?
  2. What lies underneath SDL Audio – is it CoreAudio and DirectX (just
    want to make sure it’s not using old SoundManager calls on OS X).

[>] Brian