Hi Peter,
"Rover" is a long-long-time favorite of mine. The first recording of it I owned was 33 1/3, in fact. Your arrangement is very well done and I enjoyed it very much.
I thought you might find what I did with the song in the 3rd movement of my sonata for flute and piano, where "Rover" and "The Holy Ground" are the thematic material.
I'll attach the .not file, which uses the piano in the Merlin Creative soundfont bank and the Hagi flute. I never got around to cleaning up the score, btw. The better sounding mp3 is at:
http://soundclick.com/share.cfm?id=5397032
Nice job,
mgj