on ney rosauro's site under the sound clips there is a song called sonata for vibraphone and marimba, but I can't find the music anywhere. is it possible that that name is not right. I'm thinking it might be "a message to a friend"

Actually, I think that's the Rondo movement of his Sonata - The Periods of Life, for marimba and vibraphone.
(Opus 9 on his list of catalogued works).

-Michael