Thank you!
All my asset packs on itch are under Creative Commons Attribution v4.0 International! (It’s kinda hidden, but you can find that info if you click “More information” above 🙂)
So you’re free to use them for commercial or non-commercial projects, royalty-free, non-exclusive! All I request is that you credit me somewhere, if possible, in whatever way makes most sense to you (perhaps “Music and sound effects by Chris Logsdon”).
Let me know if you have any other questions!