iTunes TrackID和DatabaseID持久性

Question

I'm using a COM object to read an iTunes library (version 11, Windows). I call the GetITObjectByID function to retrieve a bunch of tracks from a list saved in a text file in a previous iTunes session.

GetITObjectByID(SourceID, PlaylistID, TrackID, DatabaseID)

I would like to know at what extent these IDs are persistent? If they change over time, what kind of events can cause these changes? This will help me assess how reliable are the saved IDs and if I need tho refresh my ID database at each execution of my app.

Thanks.

Answer 1

根据iTunes COM文档，所有ID仅在获取ID的会话中有效：“ IITObject使用四个单独的ID唯一标识iTunes中的源，播放列表或曲目。这些是运行时ID，它们仅在运行时有效iTunes的当前实例正在运行。”