Switching active players/

Hello guys,
I really cant find mapping for Switching between active players A B (2) - it was working in previous version with TAB key but now its not and I cant find it in Mappings.
Other thing - in previous version I had to stop the turntable and load track in. But now I can just load it in during Play - can i disable this somehow?
And I would like to also ask you - if there is or maybe in future can be possibility to trigger some samples with hidden sampler during playback?
Thank you very much guys - I know its not really technical issue but I am struggling with this little things.

I really cant find mapping for Switching between active players A B (2) - it was working in previous version with TAB key but now its not and I cant find it in Mappings.
Other thing - in previous version I had to stop the turntable and load track in. But now I can just load it in during Play - can i disable this somehow?
And I would like to also ask you - if there is or maybe in future can be possibility to trigger some samples with hidden sampler during playback?
Thank you very much guys - I know its not really technical issue but I am struggling with this little things.
