I'm running the new build off ffmpeg, running the current version of audacity from repo. if i import a mp4 video to edit audio i get wma proprietary error, also its looking for libavformat.so.52 set of library's i think. Does this have to do with the new ffmpeg build? or does audacity need rebuilding? Its saying "audacity need the file libavformat.so.52 to import and export audio via ffmpeg".