in fact i considered sqlite but didn't act on it. looks like it's a better way, yeah.

as for using xml as a data-index file, well, i don't see the need for it. the data directory idea and storing the files and the structure on the filesystem is better.

but, would using the data directory method (the one i described in my last post) confuse the users? it's way more compatible than a sqlite db, but i'm worried about the ease of use for the average user. what do you think?