You can use this mod free of charge, even in commercial video's. But I do like it when you'd credit "caske33" for this mod and link me in the video description. The code remains my property though and you're not allowed to distribute the mod, or stuff like that. The only thing you can do is download it from **me** (not somebody else) and use it. You can't modify it or do anything else with it. Also the code remains closed because it's a pain to only show you the code I edited (I can't show other code because Minecraft is closed source).