A:AnswerAs long as you have an HDMI or optical input to your surround system. The HDMI has to go to your TV then. optical out to surround amp. Or if your surround sound amp has a master HDMI out to TV but older amp/ receivers do not have 4k or good HD out. Check all your I/O
A:AnswerAll blu-ray players, whether 4K or standard blu-ray will play CD's. You can either play the CD's through your television speakers or route it through your stereo or sound system.