The speakers have a cable with 3.5 mm TRS plug; the cable is directly going into one the speaker boxes, so it cannot be detached. The A/V cable coming from the console has an S-Video Mini-DIN plug and a pair of audio cinch plugs. The S-Video is plugged into the monitor.
What are my options? I strongly prefer things I would be able to order from geizhals.at (local hardware price comparison).