OldGoat,
Your question is ambiguous.
Do you want to send SACD audio from your player over the network?
Or do you want to stream audio from the network through your network-enabled SACD player?
As TLS guy wrote, the studios don't want you to transmit SACD digitally. To get full-range SACD digital audio, they require you to send it over encrypted HDMI as either DSD or PCM, depending on the capabilities of the player and receiver or pre/pro. HDCP encryption is required. HDMI/HDCP over ethernet is available, but the hardware costs $$$$.
To get better answers, you'll need to clarify your request and provide the model numbers of what you have.