Network Access to Streamer

I am blessed to have a darTZeel LHC-208 Integrated amp in my system which is amazing. Up until now I have connected my Aurender N100H to the darTZeel through a Serious usb cable. Recently, in talking with Jonathan Tinn of Blue Light Audio, the US distributor for darTZeel, he suggested that there would be a sound improvement if I disconnected the ism cable, and connected both units to my wi-fi network; and that the darTZeel could read the source material on or coming through the Aurender. While I wasn't really expecting a noticeable sound improvement (since what I have been listening to has been spectacular), I was delightfully shocked at yet a furher improvement. However, I'm not sure how to access (from the darTZeel App) all of the source material from the Aurender. The app is only showing some tracks that were recently played on the Aurender, but I can't figure out why I can't access it's hard drive files or make Tidal selections on the conductor app which will play through the darTZeel through the network. I can access Tidal directly through the darTZeel app; however, it only allows me to select from various preset menus on Tidal. Any thoughts as to how to access Aurender's files or play selections that I can make through Tidal?