One of the ways to operate the VEGA G2 Streaming DAC is with an infrared remote control. (You can also use the Lightning DS control app for iOS, or the VEGA G2 front panel buttons.) Modern IR protocols aren't supposed to interfere with each other, but as many have already learned, that's not always the case. Besides, who needs one more remote on the coffee table?
Smart-IR is the feature that lets you use your existing remote to control the VEGA G2. With Smart-IR, you assign VEGA G2 functions to any buttons you wish. See this article for details on setting up Smart-IR.