Echo on Demo

Hi, I have test the Demo but i have a lot of echo. I disable the audio source of "our" player prefab. It doesn't make sense for me to reproduce my own voice.

So I added the next line on CharacterInstantiation
o.GetComponent<AudioSource> ().enabled = false;
just below of
o = PhotonNetwork.Instantiate(o.name, spawnPos, Quaternion.identity, 0);

Its that correct or Im missing something?