Clarify project scope

README.md

@@ -1,18 +1,36 @@
 # FCaster
 
-FCaster is a native cross-platform application to cast media to a [FCast](https://fcast.org) Receiver, built with [Fyne](https://fyne.io).  
+FCaster is a Go [library](https://pkg.go.dev/git.massive.box/massivebox/fcaster/fcast) implementing a [FCast](https://fcast.org) Sender, which allows to send media to a Receiver. It also has a simple cross-platform application, built with [Fyne](https://fyne.io), to showcase its features.
-The protocol logic is all packaged into the [FCast Library](https://pkg.go.dev/git.massive.box/massivebox/fcaster/fcast), which you can use in your own projects to build a FCast Sender!
 
-Currently, the app only allows you to stream from URLs, but I will add a way to stream local files and Jellyfin media directly. (You can already stream Jellyfin media by copying the stream URL from Jellyfin and pasting it in the app - [detailed instructions](https://s.massive.box/fcaster-jellyfin)).
+**Notice**: FCaster is NOT associated to, or endorsed by, FUTO. It's an unofficial implementation of the FCast Protocol.
 
-If you're on Android, I recommend you [disable battery optimizations](https://support.google.com/pixelphone/thread/299966895/turn-off-battery-optimization-for-an-app?hl=en) for FCaster, otherwise the app will disconnect when your device locks.
+## Library
 
-## Screenshots
+The [FCast library](https://pkg.go.dev/git.massive.box/massivebox/fcaster/fcast) allows you to stream media to a FCast Receiver from your own software!  
+
+| Feature           | Supported |
+|-------------------|-----------|
+| TCP               | ✅         |
+| WebSockets        | ❌         |
+| mDNS Discovery    | ✅         |
+| Outgoing Commands | ✅         |
+| Incoming Commands | ✅         |
+| QR Code           | ❌         |
+
+Since the library is in active development, its stability is not guaranteed.
+
+## App
+
+Due to the limitations of Fyne on Android (not implementing [foreground services](https://developer.android.com/guide/components/foreground-services)), the FCaster App will not support features such as local media casting in the near future. We are working on an alternative implementation.
+
+Currently, the app only allows you to stream from URLs. (You can already stream Jellyfin media by copying the stream URL from Jellyfin and pasting it in the app - [detailed instructions](https://s.massive.box/fcaster-jellyfin)).
+
+### Screenshots
 
 | ![Main view](assets/mainView.png) | ![Cast view](assets/castView.png) |
-| --------------------------------- |-----------------------------------|
+| - | - |
 
-## Download
+### Download
 
 Head over to the [Releases](https://git.massive.box/massivebox/fcaster/releases) page to find builds for your device. You can use [Obtanium](https://obtainium.imranr.dev/) to get automatic updates on Android.