This plug-in works fine on my little G3 400Mhz. Regarding those who have problems on OS 10.2.8: maybe Panther is recommanded. I use 10.3.9 with iTunes 6.0.4.

There's a weird behaviour with the cubic mode when artwork is too large: the cube seems to open itself in some places to see it from inside. It's cool somehow but I don't think it's on purpose.
To correct this, simply check "maximum size". This setting has a wrong name. It should be "optimize size" or "fit to screen". Actually, it resizes the artwork: little ones become bigger and too big ones become smaller.

If you like this, you should test "JewelCase". I use both !! I'm a geek, I know, but I'm not ashamed !