While Flame Premium comes with a selection of Substance Texture presets, you can also use Substance Textures available in Autodesk Maya, Autodesk 3ds Max, or created with the Substance Designer from Allegorithmic. In these cases, a Substance Texture file uses the .sbsar file extension.
To use an .sbsar Substance Texture file, simply select Interop Format from the Substance Format box in the preset file browser, then navigate to and select your .sbsar file. The Substance Texture, with applicable maps and shaders, is automatically loaded into Action.