Apparatus and instruments for recording, processing, receiving, reproducing, transmitting, modifying, compressing, decompressing, broadcasting, merging or enhancing of sound, images, video or data; controllers for apparatus and instruments for recording, processing, receiving, reproducing, transmitting, modifying, compressing, decompressing, broadcasting, merging or enhancing of sound, images, video or data; video and audio switching apparatus; controllers for video and audio switching appara...