<http://data.windowsreport.com/windowsreport/post/windows_media_player_not_syncing_all_music_fixed>
<http://schema.org/description>
"A wide range of users reported that Windows Media Player isn't syncing all music on their PC. This error was encountered with different MP3 players, and also when trying to sync the Windows Media Player to an external USB storage device. Here is what one user had to say about this issue on Microsoft Answers:..."
<https://windowsreport.com/windows-media-player-not-syncing-music/>