Saves a sound annotation to a file.
AFTKN_ITEM_ANNOTATION_SAVE_AS or 663
VOID ItemAnnotationSaveAs(ANSISTRING MessageID; WORD Index; ANSISTRING Filename)
Unique Item identifier, returned by ItemMessageIDFromView().
Index number (zero-based) of the sound annotation.
IMPORTANT:This only works in the 32-bit client if the message with Annotation was created and sent by the 16-bit client.