emul-linux-x86-medialibs contains non free media-libs/faac. Could it be split into separate package?
Users having ACCEPT_LICENSE="-* @FREE" in their make.conf can't install the package without adding it to their package.license file.
There was a similar issue with openmotif (see bug #337967).
This should be fixed by multilib migration soon. Marking this bug as obsolete.