http://bugs.winehq.org/show_bug.cgi?id=25633
--- Comment #7 from Raymond superquad.vortex2@gmail.com 2011-01-02 19:54:53 CST --- you have to provide debug log with WINEDEBUG=+wave
the current implementation of winealsa does not allow two effect sound play at the same time since winealsa does not support multiple waveoutopen
may be you can try to use "plug:dmix" and waveout.c in
http://bugs.winehq.org/show_bug.cgi?id=22880 #c41