Yeah, you can use it commercially as long you don't used it in a way that redistribute it in raw.
For example: you can use it in games/videos., but you can 't create a map creation tool that gives the person the raw file of the tileset in a way that they can use it outside your tool without having to pay for it themselves. Is that clear?
For games and videos you can use it, edit it, and do whatever you want.