I just discovered an immediate problem - Overclocked ReMix has a signature image limit of 250px, but these images were 286px. I shortened the images so that they now are legal for posting within Overclocked Remix posts:
I think that that 12% reduction in height makes a big difference, don't you? Perhaps I should also generate two images per song. There's no sense in removing code that already exists and works, so I could just create another image that's really small like the one you posted from "mygamercard.net," and members could choose between the images.