Yes, that is what this does. You sync it from your own Poste...

原始 JSON

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  "content": "Yes, that is what this does. You sync it from your own PosterChan self-hostable cloud. The android app stores  the music and playlists. \n\nThe other cool thing is that you can quickly download youtube videos to mp3 and then your phone will see that you have 1 item left to download",
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