How to play hi fidelity music from Plex over Roku

Pardon if this is the wrong place to ask this question.

My setup is content on a Synology NAS, Plex running on a Windows laptop, streamed to a Roku that is connected to an Emotiva XMC-1 pre-amp (that has a 24/192 DAC built in), then connected to an amp.

I have a library of hi fidelity music (24/96 and 24/192). When I play it over the set up above, Roku 3 seems to re-sample it to 48Khz. How can I run the original file to the pre-amp? I thought of getting the Plex Media Player and directly hooking it up to the pre-amp (bypassing the Roku) but the PMP seems to have disappeared.

Any suggestions?

Thanks

I am sure there is a solution… or am I in the wrong forum?

@prashrao said:
I am sure there is a solution… or am I in the wrong forum?

Well, there is the Roku forum.

This discussion may help…

https://support.plex.tv/hc/en-us/articles/204275243-Settings