Licensing

tl;dr: Know who owns what.

As per the Scratch TOU, [project name] is licensed under CC-BY-SA 2.0. However, some media attached here, either from the main project or the additions from the remix may not be eligible by this license.

Copyright on Scratch is a bit of a rocky landscape by Scratchers (the users of Scratch), mainly because the demographic Scratch is designed for. Enforcement is at best minimal, with only one or two takedowns done so far in the entire history of Scratch.

There's this paranoia among Scratchers that their projects may be taken down for some copyright reason, observing on more popular sites like YouTube and Twitch who with the help of authoritarian music companies strikes their media who may infringe ones copyright. It doesn't help that copyright literacy on Scratch is considerably minimal.

While this project may infringe one, the risk of a takedown is practically insignificant. It's simply not worth ones time to take a project down for what seems like a website for children. However, while the risk is small, it's not none. This is important to take notice; it is possible for someone to take a legal action on your project.

WARNING: This is not a legal advice, nor a creation of an attorney-client relationship. You should always ask a copyright lawyer.