Re: [PATCH v2 0/5] MR8986: dmsynth: Volume control part 1

[Michael Stefaniuc (＠mstefani)]

Does this work for you? I found the GUID_DMUS_PROP_Volume only in the logs of Empire Earth Demo.
And there it gets filtered out by IKsControlImpl_KsProperty():
```
0024:trace:dmusic:IKsControlImpl_KsProperty prop = {fedfae25-e46e-11d1-aace-0000f875ac12} - 0 - 2
0024:fixme:dmusic:IKsControlImpl_KsProperty prop flags 2 not yet supported
```

The IKsControl iface in the IDirectMusicPort implementation should forward most likely to the one in the synth.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/8986#note_116155