All of my original music is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).
Basically, this means that, in addition to being free to download, my songs can be shared, adapted, and used in commercial and non-commercial projects (e.g. games, videos). However, if you make any changes to a song (e.g. a remix or cover), you must release your modified version under the same license. Whether or not you make changes to a song, you must give attribution and link to the license.
To give attribution, just mention the original name of the song, the creator (Maugrift), and include a link to my website. For instance, if you wanted to use the song Assembly Line from my Beeps from the Box album, you would include the following text in your video description, credits section, or whatever:
Music used: Maugrift - Assembly Line https://maugrift.com CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/
If you remix or cover my music, or use it in a game, video, or anything else, I'd love to hear about it! If I think it's particularly cool, I might post a link to it on my website. Please feel free to get in touch!