There is no other build instruction from the author.
But to answer you question, likely not. The headers and libraries should be the only thing needed, but I've tried for a long time to hand-craft the install, by stuffing the various libraries into /usr/local/lib, the header files of the respective subdirectories (BasicUsageEnvironment,UsageEnvironment,groupsock,liveMedia,mediaServer) into /usr/local/include and adding a number of explicit compiler include and library directories, but mplayer failed to acknowledge the presence of livemedia every time.
So I ended up just following the author's recommendation of putting the entire livemedia in the directory (which they state explicitly must be done :( )