Regarding Spotify you could play it via a computer connected to the USB input.
Regarding Lightning DS control of the Vega inputs:
Select: Settings->Lightning Device-><your device>->Additional Operations->DAC Setup->Input Channel
You can also setup the Vega to respond to whatever IR remote control you have on hand.
Regarding Lightning DS control of the Vega inputs:
Select: Settings->Lightning Device-><your device>->Additional Operations->DAC Setup->Input Channel
You can also setup the Vega to respond to whatever IR remote control you have on hand.