Hi there satanikoskioftes,
Thanks for the post, and welcome to the community.
On the back of the Denon receiver, there is a section labeled "Audio Out". If you don't mind hard wiring, you can run a cable from the "Audio Out (Media Center)".
Let me know if you have any other questions.
Brandon - Community Support
Thanks for the question. It can be done wirelessly with a SoundTouch Wireless Link Adapter connected to the same ports on the back of the receiver. Since SoundTouch was designed to play music to other SoundTouch devices only, this adapter would be required.