Licensing
When you buy any Andrew Cheung, YoshiOST or OSBooter music/media, it is for personal
entertainment use.
You may NOT sell it
as your own or misidentify who made the track or what the track name
is.
You may NOT monetize any media with the
audio/video in full or in
part.
Do NOT stream the song as background music for
livestreams or use in DJ sets (public performance) unless it is tracked as for
performance rights.
The only exceptions are
for critique/journalism as examples (gist), however would exclude using the
whole song straight.
There are licenses for commercial uses, such
as video games/movies/videos.
Alternatively you must
get expressed written/typed permission.