if others are not having this issue Id say its something specific to you. your rom or or something...
maybe try a different source for the patch (there are several around but the site in my sig is the most reliable, since i know noonw but me is updating it)
i also dont think its your .sav
is it only 4 points isle that has no sound... or does this issue extend to kanto once it has started.
and the evolution thing is odd, how many different pokemon have you had this issue with.