[PATCH] integrate OpenBSD's sndio driver into libao
OpenBSD uses a new sound API for some time now, they have a patch to libao adding there driver which is not yet applied.
the patch can be found here: http://lists.xiph.org/pipermail/vorbis-dev/2008-December/019779.html
however because the posting is old someone should check if the patch is still up-to-date.