moc provides oss, ogg and mp3 support that can be selected through the configure script. However, the ebuild currently only specifies: use oggvorbis || myconf="--without-ogg" It's worthwhile to also add: use mad || myconf="${myconf} --without-mp3" use oss || myconf="${myconf} --without-oss" (Also the DEPEND and IUSE variables will need to be updated to pull in the required libraries: IUSE="oggvorbis mad oss" DEPEND="media-libs/libao sys-libs/ncurses oggvorbis? ( media-libs/libvorbis ) mad? ( media-libs/libmad sys-libs/zlib )"
in cvs