Think the easiest solution would be to have a few different mp3art plugins with a different name in them lets say albumart1 for mp3art1, albumart2 for mp3art2, etc...
I have tried to rename and register it again, but that doesn't do it either. It sees the same art. In the above way it might see it as different art, only problem, you need to know how to alter the dll
Another solution is to close the screen when your done with it put /DISCARDABLE in that skin-page and it will unload . Only thing, it only works with an “end” screen
So the audio player no solution. But the albumlist it might be a solution