portable audio output library
libao is a cross-platform audio library that allows programs to output
audio using a simple API on a wide variety of platforms.  On OpenBSD,
it currently supports:
   * null output
   * raw output
   * AU files
   * WAV files
   * sndio (OpenBSD's native sound system)

Maintainer: Christian Weisgerber <naddy@openbsd.org>

WWW: https://www.xiph.org/ao/
