It's a bit of trouble I've been having on Newgrounds since the first time I uploaded audio.
No matter how untransparent the GIF is (yes, even when the BG is all black with no layers, nothing), whenever I try to put a 46x46 GIF as an album image thing for any song of mine, it keeps on failing with this message:
Error: The GIF you used is transparent.
This picture below is one of the pictures I used in an attempt to get my songs to have a thumbnail image to them. Does that even look transparent to you?