1) You'd need direct access codes for your TV; so far I don't believe anyone's found any. Otherwise, you may want to try a macro that changes the TV to channel 02 (which should drop it out of VIDEO mode and put it in TUNER mode), then press VIDEO the required number of times.

2) The Volume buttons should be set up globally to operate your amp from where ever you are. Same with Mute. With the software you can fine tune them to control WHATEVER else you want for a particular activity, if you want.