Problem here is that the distributor was indeed created for splitting an audio signal, but not vice versa. It really works. It is a bit complicated, but it comes, but not always reliable but usually without loss of quality. But I want to explain why it could not go:
A condition that it works is that the device is not active, no sound absolutely eliminated. In the Playstation no problem, but unfortunately the Dreambox sends in its standby mode always a rule right noise, so that it is at the desired tone of the PS3 to interruptions or no sound.
Advantage of standby is that the Dreambox is turned on in seconds and is ready.
The Solution:
In the Dreambox menu change the functions when you press the power button, so that a normal pressing the box into standby mode, but now pressing push Powertastedie Dreambox shuts down. So only the device sends a sound signal is desired and you can just sit back on the couch.
This is a solution. Alternatively, only one remote control switch box is recommended, which is more expensive and visible mainly comes from. Personally, I have no desire nor a remote commander in the living room and at the price you can not complain here.
Conclusion: Could bessre run, but the main thing is it usually runs. The one who buys the switch, should the equipment in the living room master, unfortunately nothing for amateurs.
Last tip to avoid mistakes: Always turn on the devices one after the other, never the same!
Otherwise a lot of fun with it.