Download CMUSIC for SUN: Sun.tar.gz
Download CMUSIC for VAX: VAX.tar.gz
The Sparc, version contains a more-or-less full port of the CARL software (and requires a Fortran compiler to properly install). Files have been compressed with gzip. When uncompressed with, say, gunzip, they each become MUCH larger tar files containing many directories, subdirectories and files containing all the sources and documentation for CARL software.
The software distribution contains much (though often somewhat out-of-date) documentation. The best source of information on cmusic and the pv programs is my book Elements of Computer Music (be sure to obtain the third printing (the Library of Congress page says "10 9 8 7 6 5 4 3") which contains corrections of hundreds of errata as compared with earlier printings (this printing was done in early 1994). For other software the included documentation (man pages, help files, etc.) is largely correct.