It’s too bad that this solutiion has not worked for me. I have several USB midi devices including an EMU 0404 midi, MOTU AV and a Fantom G with USB. I use windows 7 Ultimate 64bit. Cubase 6 has not problem playing midi through all of them.
Mac Midi Driver
I made all kinds of changes in he MidiOutld key values to change default as I have about 12 midi posibilities from “O” to “b” in hex but windows media player only played a midi file when the Microsoft Wave synth was selected as default device. The problem is bigger than that because band in a Box seems to have tthe smae issue and while it sees my midi drivers it reponds with error messages saying that the device driver is properluy isnatlled but in use by another application. Even the Roland Fantom G Editor does not work yet it works fine on XP Mode under Windows 7. What a royal pain and whi know if they will fix it on windows 8. By reading many many posts there are a lot of users having these problems with midi and audio. Make you want to run to Apple, aargh!!!!