I noticed that the artist's name is always all lowercase, you might want to look at that.
Hmm, Probably me, I'll take a look in a bit.
Does the default search accept "site" queries? That might be useful if it doesn't.
Probably not, as I actually hit several different search engines (Yahoo, Bing, and Flickr at the moment) and they likely have different syntaxes for their searches.
Also where are you saving the settings? This could quite easily work as a mame screensaver as well. I tried just a few games by using the rom name in the default search box and they gave pretty good results. Some external program (like mamehooker or the frontend) could alter the default search value when mame is running to the currently running rom.
Hmm, Interesting idea. Flipping it back around, I could have NPSS detect if Mame was running and (if there's a way) pick up the rom name from it and use +that+ as the "What's now playing" search.
But to answer the question,
Check C:\Users\{username}\AppData\Roaming\The Now Playing ScreenSaver
the settings.xml file contains all the settings.
Although, I just realized that I forgot to turn on formatting. yuck. The whole file is on one line....
I'll get that fixed next too.
Anyway, I really like it, thanks.