[Bug 33225] Metacell demo can't play music in mp3 format

https://bugs.winehq.org/show_bug.cgi?id=33225

--- Comment #10 from Béla Gyebrószki  ---
(In reply to Sagawa from comment #9)
> Created attachment 55066 [details]
> Use dB unit
>
> I can confirm the issue, even the game complains about video playback.
> Could you try this patch?
>
> I realized that this issue was caused by scaling model mismatching in
> mciqtz32. The audio volume value should be converted to dB unit before
> passing to IBasicAudio_put_Volume.

The patch works here as well, thank you.