The DMUS_PORTCAPS structure contains information about a port, returned by either by a call to IDirectMusic::EnumPort() or IDirectMusicPort::GetCaps(). How does DirectMusic fill in the DMUS_PORTCAPS.wszDescription field ? I would thought that the DMUS_PORTCAPS.wszDescription is obtained from the SYNTHCAPS.Description field, but from the test program that I wrote, it is returning the description of the filter where the pin resides. Anyone else seen this before ? Any information regarding this will be very much appreciated. Thanks. -HockYiung