Remember to do a fresh backup from scratch to restore from. If you use an old incremental backup you will get back many things you deleted and possibly see other strange effects (I.e. things you edited may become unedited).

You will loose your playlists. There is a solution though, written up by Ronnie.

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Sitting room: dCS Network Bridge, 818v3, HD621, 8kSE
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Oldest audio file: 1889 Edison cylinder