A little more regression testing...
The 5/1 dsound patch causes this on one of my apps:
err:module:BUILTIN32_LoadLibraryExA loaded .so but dll sound.dll still not found - library environment problem or version conflict, check your setup. err:module:BUILTIN32_LoadLibraryExA loaded .so but dll sound.dll still not found - library environment problem or version conflict, check your setup. err:wave:DSDB_MapPrimary (0x4568ca04): Could not map sound device for direct access (Input/output error)