If you add frames in the battle arena, you could make it so that the tune doesn't restart.
Although personally I think music on sites are one of the worst things you can have

I always listen to my own music when surfing, and when a midi start I close that window down faster than ever ;P
Waltz, could you explain what the PP things do for you, the potion and healing center I mean. And if possible, tell us how it could be implented.