I am audio-clairvoyant, which sounds like what you are describing. One thing that I did to help me channel some of the voices and separate the "noise" was to sit in a quiet place with a pen and some paper and listen to what was coming through and write down what I was hearing. I also made sure to state that only positive energies were allowed to come through. Trust me, there are some energies out there that do not have your best interest at heart and will take advantage of you if you are not careful.
If there is a community of psychics in your area try to get to know some them and see if anyone can mentor you. Or at least help you to understand this more and help you gain control.
The other thing I did in the very beginning was to talk to a doctor as well. It seems contradictory, but it is always best to look at thing from every angle.
Now I have very good control over my gift, I no longer have a hard time focusing on my everyday things because of voices that are too loud, I meditate every evening and every morning before I even get out of bed, and I write everyday. The writing has been the single best thing.
I have helped people find answers, and I have had some bad experiences with bad entities, but all in all I love the gift I have.
It will serve you well, as long as you use it responsibly.