media-sound/mumble-1.2.0_beta1 tries to load media-libs/celt-0.7.0 as "libcelt.so.0.7.0", but the actually installed library is named "libcelt.so.0.0.0". Thus CELT support in Mumble is supposedly missing, but can be restored by symlinking libcelt.so.0.7.0 to libcelt.so.0.0.0. Reproducible: Always
Thanks for your report & solution Dennis, I've committed media-libs/celt-0.7.0-r1 to CVS which installs a versioned symlink.
Issue reappears with media-libs/celt-0.7.1. The library is now named libcelt0.so.0.0.0, but Mumble expects libcelt.so.0.0.0.
Thanks for reporting again, I've applied the relevant part of the upstream patch in -r1.
*** Bug 302949 has been marked as a duplicate of this bug. ***