Uhmm... Yeah.
You girls definitely need a handful of... actual male voiceactors.
I mean, the voice acting itself was seriously good, and the voices themselves have nothing wrong with them. It's just they don't fit the characters they're supposed to portray. At all.
Well, with the obvious out of the way, I must say I did enjoy (and at times, really chuckled at) this movie for the most part. The "Past Trials" thing was great in all its absurdity (Cruella vs. Dead Puppies, haw. XD), and even though Voldemort came across as an angry clown instead of the cold, calculating villain he is in the books and movies, he did have his moments.
If you're at all looking for any guys to do voices for you I wouldn't mind helping out, feel free to let me know. You can find stuff I did through my profile.
But then, I haven't checked out the sequel yet which I'll do now, so you might have already resolved this problem. Still, I'm available if at all needed.
Keep up the good stuff. =)