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No freestyler doesn't support 2 interfaces as of yet. There is a version in programming to support 2 interfaces but I'm afraid it's not available at the moment, however you could run two versions of freestyler on two separate laptops if you REALLY need more interfaces. But personally I would look at other options for controlling if your using more interfaces as it could get more challenging with a laptop.
at events we run 3 instances of freestyler at 3 different Artnet nodes. we have a dense enviroment with failover possibilities and it works great on a Touchscreen laptop