Edit: Never mind, I think I found the bug you're talking about and it should be fixed now. Download the game again and let me know if you still have the same issue!
I'm sorry you're having problems! Can you give me a bit more info? How are you playing the game (GBA with which flashcart or which emulator)? Also when you say it locks itself on that screen, do you mean the game freezes completely or can you still hear the music?