Maybe try again and just take part of the screen with the snipping tool...
In the meantime, I found that using iTunes to burn a data disc did make everything playable in VLC (albeit with rather clumsy navigation...) but iTunes does close the disc so new files cannot be added to it.
One of the drawbacks of disc technology is there are so many variables - increasingly so because there's a lot of old/unwanted blank cd stock around - many of the optical drives are not of great quality, and WMP (in particular) is not really being properly maintained so errors crop up all the time!
Going back to the library thing - it's nothing to do with the disc. As an example - say you had downloaded a bunch of Mozart symphonies and they went into your music library as a compilation set.
If you then moved two symphonies into a new folder in the explorer library... that could damage the link to your WMP library, and they would not play - you'd get an error message saying "WMP cannot find the file - it may have been moved or deleted" It's been an ongoing reason for posts here over the years.