对于这款iPhone应用，音乐发烧友只需选择他们喜欢听的歌曲。然后Spotify就会自动将文件同步到离线的播放列表当中。
As for the iPhone application, audiophiles simply select the tracks they'd like to listen to, and Spotify automatically syncs files to an offline playlist.
这些歌曲，专辑和播放列表有没有一个特定的文件夹结构。
The songs, albums and playlists don't have to have a specific folder structure.
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