Online content doesn’t generally move so you can sign into an account and access your playlists any time. It doesn’t have access to an online database of media which is why its playlists aren’t like those that Spotify or YouTube have. VLC player’s playlist isn’t like Spotify i.e., it plays local files or files on a network location. Assuming you back up your files, and are able to recreate the directory/folder that the files were in when you created the playlist, you will be able to reuse the playlist files that you saved earlier. The one advantage of saving a playlist as a file is that it is far easier to recover it after a fresh Windows installation. It will play the files that it can find but for those that it cannot, it will show you an error. If one of the files is moved, or renamed, the playlist will not be able to find it. The files included in the playlist are saved by their name and location in the XSPF file. The saved playlist has the same limitations that playlists created in any other desktop media player has. To play a playlist, simply double-click the XSPF file that you just saved and it will open in VLC player. Save the file and give it a name that you’d normally give your playlist e.g., if you’ve made a playlist for work, you will name it ‘Work’. Once you’ve created the playlist, go to Media>Save Playlist to File.

Add the files that you want to include in the playlist.