Here are some of guides that might solve one of your problem with Windows Media Player.
(Finally released... sigh.)
Adding visualizations using regsvr32 (Recommended if you are applying an .dll visualization)
Alternate way to add skins (Recommended for users using Windows Media Player 10 on modern Windows systems)
Making a WMP Skin (This guide might need a overhaul unless it's alright)
Adding Custom Visualizations to Skins (This guide needs a overhaul)
Our Discord Server...
A special message for you who enjoys WMP Goodies, if you talk about this site, Windows Media Player or other Media Players (Winamp, Spotify) then we have a Discord Server for it! Please read the rules before talking on the server.
You can join the server clicking here.