Here is the beta to my generic artwork renamer.....
http://www.oscarcontrols.com/lazarus/files/generic_artwork_renamer.zipIt uses some fuzzy logic to guess at the game the image goes with, but for emus like nes emus it should be a 100% match....
Nes emus taken the name of the rom and add crap to the end such as "romname_000.jpg" right? Well all you do with my renamer is in one of the "remove this from text if found" slots type in "_000" and it will copy and rename all of your snaps to the new folder you specify and remove the _000. That is assuming you point to a rom path that actually has the roms for the snaps in it.
It is also designed so that you keep the orignals and the renamed versions are copies, put in a seperate folder. That way there isn't any risk in trying it and if you download new roms you can run it again and convert more art.
You know those ones in which the title is _0 and the snap is _1 ? Do the same deal except run it twice.... the first time put _0 in the remove box and point the destination folder to "titles" and it will only match up those that it removes "_0" from. Then run it a second time replacing the "_0" with "_1" and call the folder "snapshots" Poof! They are sorted!
This is beta and isn't user friendly at all... those who have already contacted me to beta test please try this and keep in contact with me. For the rest of you feel free to try it, but it's not supported yet so don't bug me about it.