normalize-0.7.6-r1 has optional xmms support, however, its configure script autodetects if xmms is installed, and tries to compile in some xmms related thing, regardless of the USE setting. Inserting this line should fix it: use xmms || myconf="${myconf} --disable-xmms" This fixes the case where you have an xmms installed somewhere, but do not want normalize to have xmms optional stuff in. And in my case, I happened to have an xmms binary in /usr/local/bin, but no headers installed, and it caused the compilation to fail. Thanks
-r2 fixes this and also uses the audiofile USE flag.