itch.io

Hi! You mean terms of service, as in license? Basically, you can use the music in any media work you produce, commercial or non-commercial, you just can't re-sell the music outside of your projects. Slightly wordier version is here:
https://gameassetbundle.com/downloads/Game_Asset_Bundle_license_agreement.pdf
(though it talks about asset packs in the 'bundle,' meaning the current Humble Bundle, the rest of it applies).