There are still a few covers/rearrangements in the VN that appear not to be Creative Commons or Royalty Free. The ones that you have with parenthesis “by” in the ABOUT.
well i've seen other creators use the same kind of music in their own visual novels, so i dont really see it as a huge issue... if it DOES become an issue though, i'll gladly take it out as soon as possible :o i think it should be okay though!
