Cloudflare stream services

Hello I’m new to Cloudflare I have a tunnel on a free account and I want to have access to a music stream in this case mstream I now that Cloudflare doesn’t allow video stream and they have a service that is affordable but I want to now if this services can run on the tunnel and the fee they have for 5$ how many gigabytes can I use to access the mstream server?
Thanks.