A structure input port whose key is inputTrackInfo. The structure contains optional entries, such as “name”, “artist”, "album", "duration", "artwork", and so on.
Available in Mac OS X v10.5 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)