"Floating mixer"
I showed that back in 2011 then it was implemented in 2017 !
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=122728&page=1

It was shown to give solo buttons in RB as RB did not even have solo buttons then.
It's been a long haul trying to get Biab RB into the modern age but as I have been saying the Biab Plugin/Standalone will take PG into the future when these are implemented: instant direct play/gen (faster than Biab), real time signatures, real tempo maps, 48khz 24bit audio, Win/Mac release at the same time and more.. hopefully in the current 2023 beta (please God) !!!!

Those that like nostalgia will still have the old Delphi Biab with the 6 months wait between Win/Mac releases.
It used to be biannual release of BB RB 2011 and 2011.5