Hi! Thank you for your kind response and reminder. The current demo version is only for demonstration purposes. We are working on creating the official music for S4U. If you're concerned about potential copyright issues with the current music, we've already updated the game package. In version V0.4.20, we've replaced the music, so you can continue making S4U videos without any worries:D We appreciate your support for S4U and your attention to detail, which has been incredibly helpful to us! Please look forward to the official release and the new music.