Are you saying that once I have the repositories added that the build script will actually find and download the correct packages for me, so I don't have to figure out which package includes the LAME libraries and/or binaries? That would be awesome.
Yup, it'll resolve the dependencies and install them after it builds an RPM and proceeds to install it. I have an RPM of build 22.0.36 (the newest build on the latest repo) for Fedora 25 x64 built. Maybe I should just start posting them? Hmmm.
For the beta builds with Theater View the build file will probably have to be edited to point to the correct test URL (I'll try to mess with this in the morning and see if I can get it going). Otherwise it'll resolve the latest build on the latest repository just fine.
EDIT: Okay, made the necessary changes to the install script to download and build RPMs of the latest Media Center 22 64-bit beta builds with Theater View. I did have to chmod 755 the SPECS directory and the two files inside and I also chmod +x the rpmbuild file so it'd run correctly as an executable. You might have to do the same before it works (otherwise you might get a permission denied error!).
cd into the SPECS directory, then run this in the Terminal;
./rpmbuild 22.0.44
And it'll download and build the RPM of the latest 64-bit beta build, and install it (along with any unmet dependencies as long as RPM Fusion is used as well). Easy peasy!