In Smode STATION you can create a cue list like that ..
And control this with your midi controler like you wish ..
No money ? No trouble .. in Smode STUDIO .. you can assign your midi controller to play your selected video ..and mute other video... OR assign Timeline Position cue .. at the PARAMETERS Tree and learn "APPLY NOW" with you midi controller..
Just before export the TimeLine Position like that ..
(Expose as Second Parametres)