Today I've added new feature to Synology Alarm Clock - wakeup of network player.

Now it works only for my AV Receiver - Yamaha RX-V 671.
(My another network player - Denon CEOL Piccolo - can turn on automatically. Yamaha can't.)

Way to do it I have read here - http://forum.team-mediaportal.com/threads/automatically-start-stop-your-yamaha-avr-with-mediaportal.115040/

I do not know if this feature is actual to any other network players or receivers. Will wait of users responses.