http://bugs.winehq.org/show_bug.cgi?id=19566
--- Comment #12 from Sagawa sagawa.aki+winebugs@gmail.com 2012-11-07 09:13:23 CST --- Created attachment 42429 --> http://bugs.winehq.org/attachment.cgi?id=42429 proposed patch
Could you try this patch?
Finally, I found out this bug comes from mmio buffer handling. MIDI is not related this issue. In detail, mmioRead() at the end of file doesn't work properly.