I lost my appe tv remote control. How do I use my Apple TV ?

If Home Sharing is enabled and you have an iPhone you may be able to use Remote app to control it (free).

Alternatively if you have content in iTunes on a running computer you could push the output to AppleTV (Airplay NOT Airplay mirroring).

Simplest thing would be to buy a replacement remote.

They do tend to get lost easily as they are small - hope it turn up in the sofa!

AC