Reply to Hooking a TV up to a DJM 900?

I have a client requesting a TV to be hooked up to my mixer (DJM 900), in addition to me playing music (using traktor). During a certain time they would like to cue a video, with audio from the video to be played through my speakers.

What would be the best way to go about doing this? Would I need any addition cables or anything? Or just a standard RCA/RCA?

I'd imagine this wouldn't be ideal, so if there are any detriments to my gear , definitely not worth the risk.

Any help would be appreciated