I've been thinking about this issue some more recently, and I came across the MS TechNet article on the subject: http://technet.microsoft.com/es-es/library/cc766308.aspx. To summarize the relevant parts: > Fix Name > > IgnoreMCISTOP > Symptom: > > The cursor freezes momentarily during background music changes. > Fix Description: > > Modifies the mciSendCommand function to ignore the MCI_STOP command, issued in response to the MC_CLOSE command. On Windows 95 and Windows 98, the MCI_STOP command has a relatively fast response time, but on Windows 2000 and Windows XP Professional, it can take several seconds. A quick tour around the git repository shows that MCI_SendCommand is implemented near line 1525 of dlls/winmm/mci.c. Would it be beneficial to add a do-nothing case to the outer switch statement for MCI_STOP?
