Good heavens, somebody made it into a song:
http://cantusquercus.com/cq9611p1.htm

I just found this version (I was interested, because I have seen this before; in fact it might even be here in AWAD somewhere.) I am not asserting that this is the "real" version, BTW.
DO NOT WEEP

Do not stand at my grave and weep
I am not there, I do not sleep

I am a thousand winds that blow
I am the diamond glints on snow

I am the sunlight on ripened grain
I am the gentle autumn's rain.

When you awaken in the morning's hush
I am the swift, uplifting rush

Of quiet birds in circled flight.
I am the soft stars that shine at night.

Do not stand at my grave and cry;
I am not there, I did not die.


Mary E.Frye 1932

I found 3 more (I used Alltheweb search, to be different) that listed it anonymous or author unknown, and then I found this, that gives the rest of the words in the song (not much like, after all--only the first 2 lines) side by side with the poem credited to Mary Frye.