While doing profile clean up, I found this from arch/amd64/package.use.mask, # Feb 17th 2007; drizzt@gentoo.org # amd64 does not have an emul libao package games-emulation/zsnes ao After which we can drop the mask, and get audio outputs available for 64bit
+*emul-linux-x86-soundlibs-20100409-r1 (10 Apr 2010) + + 10 Apr 2010; Pacho Ramos <pacho@gentoo.org> + -emul-linux-x86-soundlibs-20100409.ebuild, + +emul-linux-x86-soundlibs-20100409-r1.ebuild: + Include media-libs/libao as remembered by Samuli in bug #314559 + Thanks for reporting