Directly? Currently, there is no way to live-stream music into a ROBLOX game due to issues not just with HttpService limitations, ensuring it is PG content, but also issues concerning material that may not be necessarily verifiably royalty-free.
Indirectly? It is possible to hackily have users join a Discord channel and finagle a Discord bot to be able to live-stream the music to the channel, as well as with some ROBLOX-to-Discord verification bots to move users around to the bot’s corresponding stream channel. That’s the only way I could see what you want being a possibility at the moment.
You can’t livestream music to Roblox at the moment. The only way to do it is, to upload it also there is a time limit with a sound and I think it’s around two minutes.