I eventually want to start djing but for now I want to add some P.A. speakers to my room.I have a pc that I run my old school Yamaha receiver threw to the speakers off of it.I want to use my pc as my sound source so I can listen to music online until I get my cdj.So should I buy a standalone mixer and run everything threw that?or buy a audio interface and run ut threw there?It will be 2 P.A. 12 inch speakers that will be powered, music loud enough for a house party but I want to get the right amount of power to them.