How to make audio+video channel syncing (when doing splitting ) more user friendly? I Have an audio track and the video track and want to split them both at the same point with cmd+b. I have to manually select Channels with the mouse in order for the split to be applied to the audio. But when I press cmd+b later the audio is not split and I have then reselect with the mouse, is this the only way?
is this the only way?


No, nor the friendly way.

Using the Control button to maintain the current position.


Place the line marker where you want to split the clips.
While holding the control button > click on the movie clip > select
Split Clip.
While still holding the control button down > click on the audio track > select Split Clip.


That's it.