FM0.9beta is available either as a tar compressed file or as a tar gzipped file.
Unpack the software into your chosen installation directory executing either
gunzip FM0.9beta.tar.gz tar xvf FM0.9beta.taror
uncompress FM0.9beta.tar.Z tar xvf FM0.9beta.tar
depending on the type of the downloaded compressed file.
You should end up with the directory structure shown in Figure (assume that FM0.9beta stands for your installation directory)
Figure: FM directory structure