Dutch & Dutch 8c with multiple sources

I do not think there are any hifi preamps that take two or more toslink inputs and have an aes3 output. Or do I misunderstand how to do this?

That's why I said you might need to use a preamp or DAC with multiple inputs and use analog output to the speakers. The way I did it was setup my server on the network and used a Lumin U1 mini to stream from my ripped files and Quboz to the speakers. 

What a nightmare. All this just for audio from my tv.

Is your connection from the TV , Toslink, SPDIF , HDMI or analog ?  You could email Dutch and Dutch  explain what you're trying to do. They were always considerate and helpful.