According to this commit, 3.13 also enabled radeon audio by default: http://lists.freedesktop.org/archives/dri-devel/2013-November/048316.html
Could that be of use?
According to this commit, 3.13 also enabled radeon audio by default: lists.freedeskt op.org/ archives/ dri-devel/ 2013-November/ 048316. html
http://
Could that be of use?