Where does JF get its placeholder image when it can't find a banner for a band?

Because that is not Canadian Metal four piece Tomb Mold. (They're pretty dorky looking too, it turns out, but that ain't them.)I think I know why it's doing this: because my music library is organized under directories for each letter of the alphabet (/albums/T/Tomb Mold/...) The same picture of eight Asian guys shows up for Talking Heads, too, for example. I'm just wondering if there's a way to specify a better placeholder image. I'm perfectly happy to go digging in the server's directories if that's what it takes.