Tablo streams media via HTTP, so you have to get the “streaming URL” or playlist URL and I’m sure VLC will work. I regularly use smplayer to do the same thing.
It’s not a here’s how to do it type of answer. I could suggest a 3rd party app APL Tablo. From the Recorded window, it will give Copy Streaming URL. If you want to bad enough. This is really a straight forward method and extremely easy.
To make it super simple - launch VLC, from the Media menu choose “Open Location from clipboard” then click Play. (yes, I just confirmed it works that easy).
There are other PITA ways, or more interactive methods, but this is about as painless as it is for what you want I believe.