[Bug 39021] New: Valkyria Chronicles (Steam) runs without audio (needs native xaudio2_7.dll)

https://bugs.winehq.org/show_bug.cgi?id=39021

Bug ID: 39021
           Summary: Valkyria Chronicles (Steam) runs without audio (needs
                    native xaudio2_7.dll)
           Product: Wine
           Version: 1.7.48
          Hardware: x86
               URL: http://store.steampowered.com/app/294860/
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 51976
  --> https://bugs.winehq.org/attachment.cgi?id=51976
terminal output

No audio device is selectable in the launcher when starting the game with
built-in xaudio2 libraries. The game does start but it runs silently.
Plain terminal output doesn't show anything obvious but I'm attaching here
anyway.

+loaddll reveals that the game uses xaudio2_7.dll.

Running the game with WINEDEBUG=+xaudio2 adds these lines to the terminal
output:
> trace:xaudio2:DllMain (0x7c0c0000, 1, (nil))
> trace:xaudio2:DllGetClassObject ({5a508685-a254-4fba-9b82-9a24b00306af}, {00000001-0000-0000-c000-000000000046}, 0x33ef9c)
> trace:xaudio2:XAudio2CF_CreateInstance (static)->((nil),{8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb},0x33efec)
> trace:xaudio2:IXAudio2Impl_QueryInterface (0x1cf3c0)->({8bcf1f58-9fe7-4583-8ac6-e2adc465c8bb}, 0x33efec)
> trace:xaudio2:IXAudio2Impl_AddRef (0x1cf3c0)->(): Refcount now 1
> trace:xaudio2:XA27_Initialize (0x1cf3c0)->(0x0, 0xffffffff)
> trace:xaudio2:IXAudio2Impl_Release (0x1cf3c0)->(): Refcount now 0

'winetricks xact_jun2010' works around the problem and the game runs properly,
with audio.

wine-1.7.48-74-gb3fe96a