Chinese tablet as a media player, smartphone as a remote control?

Question

Android

Greetings hackers!
A thought came to me, as usual after midnight.
Task.
Connect an android tablet to a TV via hdmi as a media player. And use your Android smartphone as a remote control. Is it possible to? And are there any applications for this case.
And the same question, will the sound from the tablet be transmitted to the TV via hdmi? Once upon a time I read something about the impossibility of transmitting sound, but you can’t figure it out with the specifications.
TV SUPRA STV-LC2217F
Tablet explay informer 701
Phone lg p500
In my amateurish imagination, it works like this, on the tablet, a movie is launched via hdma, goes to the TV and is played there, the phone is connected to the tablet via Wi-Fi and somehow controls it.

Answer 1

play.google.com/store/apps/details?id=com.tournesol.tabletremote

Answer 2

1. put on the xbmc tablet
2. put on the smart xbmc remote
3. voila
PS Both pieces of iron imply the presence of android