Windows Media Player Plus! - Various enhancements for WMP Reply #250 – 2015-12-31 20:07:08 That limit applies to the number of songs shown in the current view of the library. So if the current view consists of more than 500 songs (e.g. when selecting the Music category), the disc numbers won't be shown. As long as you don't have a multi-disc album of more than 500 songs, you probably won't even notice this limit.