How are your HDMI Outputs on the Oppo configured?.... playing CDs is becoming a pain because, at random, during playing a song, the reproduction stops for a few seconds. Did anybody else experience this? any idea how to fix it?
This thread mentions an issue with Sony TV's in standby still triggering HDMI handshakes - which cause momentary losses of sound. Is a Sony TV involved? If so, try unplugging the HDMI on it and see if the problem goes away.
This could also be any other equipment using CEC control too - so start with switching it OFF on all devices.