Need to connect your audio cables to a set of speakers. The red/white cables on your video connector is for audio, and you need to connect it to your speaker.

If you're using standard speakers, you'll need to get a converter to relay the two cables to your single audio jack on your speakers. On higher end speaker models, they should already have the red/white connectors for use

There should be cable extensions available so you can reach your speakers. If you can't find one, you can always find another set of RCA cables and just use a bridge to connect your 360's cable to the other set of cables.