If anybody could possibly transpose this song for a group of trumpets it would be greatly appreciated.

*looks doubtful* I can transpose the Broken Wings MIDI that's on Ichigos for you, with permission of the creator, but looking at the transposed score there's bits of it that are too high for a Bb trumpet to play (top C# and the like). And with no other accompaniment it'd be a bit of a trumpet sound mire... are you sure there's no other orchestral midis out there that you'd prefer?