The game runs and looks good with no bugs (I think...). The problem is that you can't hear the music, any solution to this?

Same problem here. Did you find any solution?

Are you playnig the so-called "Gold" version? That's the only one with music (per example, when you leave the first fence at the very beginning) and I think it's not in Spanish.

So chances are that if you are playing with the Spanish version, it won't have music.