Maintenance for the week of July 13:
• PC/Mac: No maintenance – July 13
The issues on the North American and European PlayStation® megaservers have been resolved at this time. If you continue to experience difficulties at login, please restart your client. Thank you for your patience!
Ah sorry now I understand what you mean. Then no, you should be able to hear those. It is a known bug however and if I was you I'd contact support and keep relogging until it comes back. If that doesn't work you can hear all the voices on youtube vids and perhaps choose one off there.
I don't believe there is a repair tool for X box, at least that's what I'm told. This thread was about a PC issue, where you can do a repair from the game launcher.