Yes. I have the optical audio out from my universal player to audio on one of my video inputs I use solely for CD playback. I did this so I could rename the video input to "CD". With the new firmware you can name audio inputs and I'll do some rearranging when I update my 990's firmware.
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AvFan
Outlaw 976 | ATI 2005 | M&K 850s Left, Center & Right, Surround-55s, MX-70B Sub | Harmony 950 remote | Panamax 5100 | OPPO UDP-203 | LG OLED55B7