No, I do not have WIFI turned on. Also, I should note that if I use the internal speaker, there is no stuttering. Only when I use the A2DP stereo headset.

Also, the stuttering does not go away after 10 seconds, it continues. It occurs using Window Media Player and TCPMP. Also, when I use it as a headset, the person I call hears me, but I do not hear them.