Shared Media Catalogs Over The Internet?

datawrangler asks: "For many years and for many reasons, I have postponed the task of creating a database of all my LPs, cassettes, CDs, and videotapes. Nearly twenty years ago, I made the effort to enter my comix collection into a database and all I have to show for it is a couple of 5.25" Apple ][ floppies which I can no longer read. Now that I live in a Web-enabled world, I am re-inspired to catalog all my media. It will take a good deal of time, but I will gladly invest it knowing that my collection is forever searchable via Internet. But how to proceed? I want to take a leaf from CDDB's book, and conform to their schema - or do I? Has anyone yet designed a useful standard for implementing a distributed database of recordings? How should I design my Web-enabled database so that it tells me not only that I own six recordings of 'How High The Moon' but also that there are 274 other known recordings of that tune?" A tall order, but something that might prove to be worthwhile. Thoughts?