Is there any good, free UNIX/Linux software you can suggest for keeping a searchable index of removable media? I have a large collection of backed up files on DVD-R (about five or six hundred volumes). I have been using a proprietary and rather crufty application called CDFinder. My Mac laptop has become rather less stable recently (and I haven't got enough money for one of them nice new MacBooks), so I've made the leap to a netbook running Linux. This is the one application I can't find a decent equivalent for.

Ideally, I want an application that will maintain a database of all the metadata about the files on burned CD/DVD volumes. That metadata will obviously include the file names, creation/modification dates, but also ID3 data for audio files and the equivalent metadata for videos, photos, PDFs and all the other stuff I haven't really thought about. Search speed isn't tremendously important - it doesn't bother me if it takes fifteen seconds to do a search.

One of the things I would like would be for the data to be in an open format, and for the search tool to be usable from the command line (so I can use it over SSH).

I have done some Googling, but all I can find are the sort of things record collectors would use to keep track of their albums. Not what I want: I basically want UNIX's metadata-aware 'find' or 'locate' commands for unmounted volumes.

I've been thinking about building something like this myself as a fun little open-source project over the Christmas holidays. If someone has a suggestion of an existing project that would do what I want that is free, open source and preferably not tied to any windowing environments (command line ftw!), I'd be greatly appreciative.