I got ALSA MIDI running in wine 0.9.8. It has to be configured using winecfg. That's the only way to configure wine now. If not done so far, please update README.Debian.
One problem still exists: libwine-alsa seems to take only the ALSA Client name into account for providing port names to the applications. But some apps relay on uniquely named ports. So, please add a better heuristics for those names. At least using port names (if existing) instead of the client names would be a better choise.
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