Comment 2 for bug 164899

Looking through the rdepends, the following applications do not appear to have a supplementary dependency on another sound library: waon, shell-fm, pytone (and likely other python-pyao rdeps), mpg321, mpc123, liquidsoap (unless you count icecast as a fallback), possibly libao-ruby1.8 clients, possibly libao-ocaml clients, gnomoradio, flac123, d4x, aldo, cdrdao

So, of the 27 affected applications, at least 11 do not appear capable of sound output with the current /etc/libao.conf