Someone who is practicing contemplation should not be held prisoner by a robot voice or a glowing screen, but instead reach an inner presence of God, and His stillness encompassing all that we experience during that sacred time.
It is absolutely necessary to shut out every distraction possible. At the same time, we acknowledge that the practitioner will be distracted in some way, not through his own fault, and we must learn the proper response to fleeting distractions. But to purposely tether yourself to a created, pagan object is to invite failure from the outset.