Been looking and trialing audio cataloguing systems for years, finally found what I consider to be the ideal (for me) system. Not cheap but its functionally is amazing. Within a week I have learnt the interface and catalogued 300 CD's 5300 tracks.

Look at http://www.fnprg.com/catraxx/index.html there are other databases available, i.e. books, stamps.

Not cheap but worth every penny US$39.95