disable voice command on ipod touch

I have been using my iPod Touch for listening to music since I purchased it about 3 months ago and only recently, while listening to music - the music will be interrupted by the Voice Command function. I have tried to disable it in settings but it will only allow me to change the language. I've googled the problem on-line and can't seem to find the answer to this problem. What have you done out there to stop this?