Even though prices are stupid atm, this is your push to finally spin up a local jellyfin instance. You can run this off an old laptop and an external drive. It won't be fantastic but it will work and you can look and giggle at the IP holders wringing their hands not knowing how to actually stop piracy. Hell, my entire docker stack (minus plex) is just on a pi. Starting off it's not too expensive. The expense hits when you turn it into a full blown hobby and you are looking at homelab setups ontop of your htpc setup.