Also, do you need something specific to have SLING? (Meaning, do you need like appletv or firetv or roku, etc.)
Sling TV is an app you download on a settop streaming box (AppleTV, FireTV, Roku, Chromecast, or video game system (XBox One) and subscribe to monthly. You can pick the base bundle for $20/month and then add-on other bundles for $5-10/mo., depending on the bundle (e.g. ESPN is in the Sports bundle).
So,
ESPN - Sling TV
Is it live? Also, is it all of the ESPN channels?
BTN - Currently no option other than having a friend with it?
AMC - Sling TV
FSN - not possible at all?
Next question, what other channels were the Huskers on this year that I would need still?
ESPN is live on Sling TV, as are the other available ESPN channels you can get in that package. You get ESPN and ESPN 2 as part of the base Sling package, and the SEC Network, ESPN U, ESPN News, and ESPN Goalline are all part of the $5/mo. add-on package you can pick up. I think the only things missing that are ESPN related are the Longwhorn Network (not long for the Earth anyway) and ESPN 8: The Ocho.
BTN was, at one point and time, make a streaming app available to a bunch of devices, including gaming consoles...but the only thing that got it was Roku as far as I know. And since BTN is part of the Fox Sports family of networks, and there was discussion of a larger, consolidated effort by Fox to integrate their sports networks in with their other streaming initiatives, there may be something later this year...but who knows.
And the potential channels we could be on this year would be ESPNs, ABC, BTN, and, if we've truly learned from our mistakes, Fox.