Hello NoSweet,
Thank you so much for your message , I really appreciate your interest in the game!
You're absolutely welcome to stream it on Twitch, upload Let's Plays on YouTube, and share clips on TikTok or Instagram. There's no problem at all.
As for the music and sound effects: no worries there either. All the audio used in the game (both music and sound effects) is copyright-free. The assets are either my own creations or royalty-free resources from platforms like Sketchfab, intended specifically for use in indie games with no commercial revenue.
If you ever need anything else or want to tag me when you post your content, feel free to reach out anytime!