ValleyBell: Pro version can be got here no frills attached. I know for a fact it works in Win7 x64. (Author stopped selling it for a long time now, too bad archive.org didn't catch his goodbye message)
http://djtbmx.stdrand.com/DLs/WJinstaller.exe I remember MIDI Orchestrator. Had to remember that using embedded text in the MIDI ends up crashing other MIDI applications attempting to open it.
(Wasn't there a 32-bit version?)
neologix: The last BSOD I had with this had to do with either the Shareware version under Win98SE (white-box errors ftw) or GYM2MID logs with excessive NRPN commands. :V (Though yeah, I distinctly recall "losing" notes on consecutive saves after running it for a long time, or weird resizing glitches though they rarely happened for me)