I have a PS Audio Stella Gain Cell, which has an HDMI I2S input. I'm looking at my options for a CD Transport with I2S. A likely contender is the Pro-Ject CD Box RS which has an I2S output via an RJ45 socket. However, I'm not sure if the two are compatible, but if they are how should I connect them? I'm struggling to find a RJ45 to HDMI cable. Do such things exist?