Anthony, as I mentioned in the other thread, once you select your dCS component from your Audirvana Studio App, it will automatically detect the DAC and configure itself appropriately (including the Lina).
You can override the configuration manually if you choose to;
If your Audirvana Studio App is not detecting your Lina stack, then you either have a problem with your home network, or the Audirvana app itself, in which case you should post on the Audirvana forum and ask for assistance.