My favorite movie is Being There with Peter Sellers, from 1979.  I
have watched it many times, and every time I do, I am entranced by the
piano music that is played throughout.  I have found a few mentions of
this music on the web, but as far as I can tell, the soundtrack is not
available.  I would like to know if it is, in fact, available, and if
it is, where I can purchase a copy.  If it is not available, I would
like to know where to buy a recording of the music through some other
source.

Thank you very much.  I look forward to listening to this marvelous music.

I wish I had better news, but it appears that no soundtrack album of
"Being There" was ever issued. The original music by Johnny Mandel was
rather brief, although memorable. There just wasn't enough music in
this film to make an entire album.

I have found a well-done midi version of one of the piano pieces from
"Being There":

http://www.moviethemes.org/midis/midisa-f/beingthr.mid

Here is another online place where you can hear some of the music from the film:

http://www.angelfire.com/md/k3ky/page23.html

If you enjoyed the piano music in "Being There," you might want to
investigate the work of the French composer Erik Satie, notably the
Gnossiennes:

http://tinpan.fortunecity.com/ayers/169/visionmuz/midi/gnoss.mid

The opening theme's music, an excellent Fusion version of strauss'
"Thus Spake Zarathustra" was performed by Brazilian Eumir Deodato.
It's available on His Prelude album.