http://bugs.winehq.org/show_bug.cgi?id=26233
--- Comment #7 from Andrew Eikum aeikum@codeweavers.com 2011-02-28 10:24:25 CST --- There are two buffers active during the logo movie. One is set to two channels and appears to get the movie's audio data. The other has 2 channels with UseStereoSound=1 and 6 channels (5.1 surround sound) with UseStereoSound=0. During the movie, this buffer never gets non-zero audio data. After the movie, the second buffer starts getting and playing audio correctly with either config setting.
I suspect there's some ugliness when mixing buffers with different numbers of channels. The two-channel buffer seems to get clobbered by the six-channel buffer during the intro movie. Going to look into how dsound does mixing with different channels.