Hello, I've posted a patch to add jack support to libao six months ago: http://lists.xiph.org/pipermail/vorbis-dev/2014-October/020416.html There is a ticket in trac with all files: https://trac.xiph.org/ticket/2083 But there is no update so far. Is there something missing or not correct? Is libao currently unmaintained? Thank you, Laurent