AppleTV has 2 Outputs on the back. One is Optical for Audio Only and requires a Toslink fibre optic cable to get the good quality audio into the 8050 receiver via the Game 1 Port.
The second connector is HDMI which is a compact low profile cable which transfers both HD1080 Video and Left & Right Audio to another device.
The built in WiFi should be picking up your Router WiFi in the house and transferring iTunes music to these Ports. Just play a song on iTunes on your computer & click the icon to select AirPlay on your ATV.
There are a heap of HD TV's and Amp's etc using HDMI these days.
It's the simplest way to get connected & its the best quality.
Unfortunately the Onyko 8050 uses a proprietary port which is not directly compatible.
I noticed all the Video Ports on the back of the Onyko are the old fashioned Yellow RCA connectors. (Called Composite Video.)
There are converter boxes & cables of various sorts that you could use on eBay, Amazon etc.
Many modern Amplifiers also become the main SwitchBox to transfer Video & Audio from one device to another. eg. My Pioneer VSX-922 has 5 HDMI input ports and 1 HDMI output port along with an assortment of RGB & Toslink Inputs & Outputs.
This way (via remote control) I can choose the Apple TV to Connect to the Plasma HD TV or The DVD Player to play Video or Audio to the Speakers. HDMI Makes the cabling so much easier.
For Future reference, when checking out new HiFi gear, always check the ports on the back of the unit.
Your Ports/Cables go by age.
1: Yellow-Composite Video RCA Plug (oldest)
2: Red & White RCA Plug (Audio Left & Right)
3: S-Video-Mini Din Connector (Video Only)
4: RGB- Component Video (Red,Green,Blue-Video Only)
5: DVI- Digital Video Interface (HiDef Video Only)
6: Toslink- Fiber Optic (Audio Only)
7. HDMI-High Definition Media Interface (HD Video & Audio)
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