Rebuilding the WMP Library; What do you lose?

Discussion in 'Windows Media Player' started by Swifty, Dec 22, 2009.

  1. Swifty

    Swifty Guest

    I'm getting some strange effects in my WMP11 under XP; Tracks that play,
    but you cannot find the album they are in. Nothing major, just a feeling
    that there's something amiss.

    If I rebuild the library, as documented at
    http://zachd.com/pss/pss.html#medialibrary then how much will I lose?

    Clearly I'd lose any playlists and auto playlists.
    I'd keep the ratings, because I've chosen to save those in the files,
    but I'd lose the play counts presumably.

    Would the genres and sub-genres survive? When I change these, my backup
    sees the files as changed, so something is stored in the files.

    --
    Steve Swift
    http://www.swiftys.org.uk/swifty.html
    http://www.ringers.org.uk
     
    Swifty, Dec 22, 2009
    #1
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  2. Swifty

    Tim De Baets Guest

    You won't lose any playlists or auto playlists, these are stored as
    separate files, which WMP usually finds again when it scans all
    monitored folders to refill the library.

    The Genre and Subgenre fields are stored as tags in the actual music
    files, so these will be restored. See
    http://thewelltemperedcomputer.com/SW/WMP/Backup.htm for a list of
    fields that aren't stored in tags.

    If you want to be sure that you don't lose anything, you could use the
    Metadata Backup tool:
    http://www.dalepreston.com/Blog/2007/03/windows-media-player-metadata-backup.html
    Even this will not be able to restore the Date Added and Date Last
    Played-fields, as they are read-only.

    Regards

    --
    Tim De Baets
    http://www.bm-productions.tk

    Swifty wrote:
    > I'm getting some strange effects in my WMP11 under XP; Tracks that play,
    > but you cannot find the album they are in. Nothing major, just a feeling
    > that there's something amiss.
    >
    > If I rebuild the library, as documented at
    > http://zachd.com/pss/pss.html#medialibrary then how much will I lose?
    >
    > Clearly I'd lose any playlists and auto playlists.
    > I'd keep the ratings, because I've chosen to save those in the files,
    > but I'd lose the play counts presumably.
    >
    > Would the genres and sub-genres survive? When I change these, my backup
    > sees the files as changed, so something is stored in the files.
    >
     
    Tim De Baets, Dec 22, 2009
    #2
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  3. Swifty

    Swifty Guest

    Tim De Baets wrote:
    > If you want to be sure that you don't lose anything, you could use the
    > Metadata Backup tool:
    > http://www.dalepreston.com/Blog/2007/03/windows-media-player-metadata-backup.html
    >
    > Even this will not be able to restore the Date Added and Date Last
    > Played-fields, as they are read-only.


    I've wondered about fields like that; you can't edit them in the WMP UI
    (like the play count).

    I have a few simple programs that use OLE to access the database
    directly. I've never tried any updates; I use it just to extract a
    digest of my albums for use on a website. Maybe I should try some
    updates to see which fields I can change?

    --
    Steve Swift
    http://www.swiftys.org.uk/swifty.html
    http://www.ringers.org.uk
     
    Swifty, Dec 22, 2009
    #3
  4. Swifty

    Tim De Baets Guest

    Swifty wrote:
    > I've wondered about fields like that; you can't edit them in the WMP UI
    > (like the play count).


    Play count can't be edited in the UI, but doesn't seem to be a read-only
    attribute. It can usually be set programmatically.

    > I have a few simple programs that use OLE to access the database
    > directly. I've never tried any updates; I use it just to extract a
    > digest of my albums for use on a website. Maybe I should try some
    > updates to see which fields I can change?


    You could (there's an isReadOnlyItem-method in the WMP SDK), but I don't
    really see the point. The fact that a field is read-only doesn't
    necessarily mean that it's not stored in the music file. You can use
    WMP's Attribute Reference to check whether a field is stored in the
    music file, in the library, or both:
    http://msdn.microsoft.com/en-us/library/dd562330(VS.85).aspx

    Regards

    --
    Tim De Baets
    http://www.bm-productions.tk
     
    Tim De Baets, Dec 23, 2009
    #4
  5. Swifty

    Swifty Guest

    Swifty, Dec 25, 2009
    #5
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