The site talks about setting up a receiver, but I can't figure out how I would cast something to an FCast receiver, or what is currently available to cast.

We will do a better job explaining this soon and also provide binaries. For now there are a few possibilities:

1. Grayjay can cast to an FCast receiver

2. There are some terminal clients and a nautilus plugin, but we don't provide binaries (yet). These can be used to cast local media and remote media https://gitlab.com/futo-org/fcast/-/tree/master/client

3. Someone made a yt-dlp client that can cast to FCast: https://git.sr.ht/~shironeko/fcast/tree/yt-dlp/item/clients/...

4. Cloudfstream supports it: https://github.com/recloudstream/cloudstream/blob/master/app...

Are any efforts being made to incorporate this into VLC? Both as a receiver and caster?

Not sure how useful that would be, since VideoLAN supports its own streaming solution https://www.videolan.org/vlc/streaming.html

Not ongoing but certainly something I am open to.

Will there be a receiver for Fire TV too?

https://www.amazon.com/dp/B0CLKVH8GZ/ref=sr_1_1?keywords=fca... personally only tested on a Fire TV Stick but I believe it should be equivalent?

Would it be possible (in theory) to build a receiver on an embedded platform, for instance an audio-only ESP32 speaker, or is there something in the protocol that requires a more powerful device?

The protocol has been designed by taking the commonalities between all different casting protocols like AirPlay and Chromecast as a base. This is what has been used to make version 1.0. I tried making it as simple as possible and low effort to implement.

https://gitlab.com/futo-org/fcast/-/wikis/Protocol-version-1

As you can see the 1.0 protocol is very lean and fits on an A4.

If you want to have an audio-only ESP32 speaker I don't see why it wouldn't be possible with the FCast protocol.

For multiple speakers/screens, some kind of guarantee or description about the precision of the update callback would make it possible to synchronize multiple speakers and screens.

Any road map for Bandcamp and SoundCloud (logged in) support.

Briefly looked at SoundCloud script js, for the moment it seems to be written to pull frontpage with basic API implementation, correct me if I'm wrong.

Thanks for taking this effort, I hope it takes off!

Question, is it named after the sites?

What about as a Kodi plugin?

I have seen several attempts at this https://github.com/c4valli/kodi-fcast-receiver being one of them. There is not one provided by FUTO (for now).