Is there any concern with listening to audio/video recordings of Tefilloth (prayers)? If someone hears a recording of a Berachah (blessing), does he have to say 'Amen'? Is he prohibited from saying 'Amen'?
There's a fantastic video recording floating around of Cantor Helfgot during this year's Seliḥoth, which includes Kaddish. I muted that part when watching the video. Could I have listened to it? Should I not have watched the video at all?