Need longer and louder ring

This will sound silly to most of you young guys, but my hubby doesn't have very good hearing. He is getting mad because the phone doesn't ring long enough or loud enough for him to hear. By the time he does, they have left a message. I have it set to loud, 3 vibrates. Can anyone help? Which tune seems to be the loudest? He has a BB 8300. And how do I change the information?
Thanks in advance

the two ringers that i use i downloaded from here are the ringer from "24" and the tony soprano one that sounds like his phone. i can't hardly hear any of the others myself. hope this helps!

You can also make the ringtones louder with free programs such as Audacity: Free Audio Editor and Recorder