Reply to Connecting mixer to laptop

Hey,
so last evening I had a party (finished primary school) and ofc we had a DJ.At the end of the evening I asked my friends about his djing and they said that he was awsome but he used automix in virtual dj.


Before that evening i wanted for my first controller to be Numark MIixtrack Pro.But in my city DJ is a guy wich has mixer or controller and plays music all evening (So if i bring my amp and just turn some knobs and press butons I would be a DJ bcs people dont know what am I doing)


Now i want some mixer wich have effects and i looked in my local shop and i saw Behringer DJX900USB but my dillema is can i use it with just my laptop and softwear(Traktor or Virtual DJ doesnt matter).I looked at some videos on YT and for some mixer you will need sound card, but if I buy that mixer i wouldnt have money for sound card.