diff --git a/Linux/Cargo.lock b/Linux/Cargo.lock
index 91f63fc..949937d 100644
--- a/Linux/Cargo.lock
+++ b/Linux/Cargo.lock
@@ -10,6 +10,7 @@ dependencies = [
  "log",
  "min-rs",
  "platform-dirs",
+ "regex",
  "relm4",
  "relm4-icons",
  "rust-i18n",
diff --git a/Linux/Cargo.toml b/Linux/Cargo.toml
index aedb7aa..7c11c1e 100644
--- a/Linux/Cargo.toml
+++ b/Linux/Cargo.toml
@@ -8,6 +8,7 @@ build = "build.rs"
 env_logger = "0.11.3"
 log = "0.4.21"
 platform-dirs = "0.3.0"
+regex = "1.10.5"
 relm4 = "0.8.1"
 relm4-icons = "0.8.3"
 rust-i18n = "3.0.1"
diff --git a/Linux/locales/actions/pipewire.yaml b/Linux/locales/actions/pipewire.yaml
new file mode 100644
index 0000000..b27e1d5
--- /dev/null
+++ b/Linux/locales/actions/pipewire.yaml
@@ -0,0 +1,7 @@
+_version: 2
+
+actions:
+  pipewire:
+    set_volume:
+      name:
+        en: Set volume
\ No newline at end of file
diff --git a/Linux/locales/devices/emulator.yaml b/Linux/locales/devices/emulator.yaml
new file mode 100644
index 0000000..34a0e1f
--- /dev/null
+++ b/Linux/locales/devices/emulator.yaml
@@ -0,0 +1,6 @@
+_version: 2
+
+devices:
+  emulator:
+    name:
+      en: Emulator
\ No newline at end of file
diff --git a/Linux/locales/devices/serial_min.yaml b/Linux/locales/devices/serial_min.yaml
new file mode 100644
index 0000000..a1d1455
--- /dev/null
+++ b/Linux/locales/devices/serial_min.yaml
@@ -0,0 +1,6 @@
+_version: 2
+
+devices:
+  serial_min:
+    name:
+      en: Serial device using MIN protocol
\ No newline at end of file
diff --git a/Linux/src/actions/mod.rs b/Linux/src/actions/mod.rs
index f172a7a..85cdecb 100644
--- a/Linux/src/actions/mod.rs
+++ b/Linux/src/actions/mod.rs
@@ -1,8 +1,32 @@
-pub mod registry;
 pub mod pipewire;
 
+use crate::registry::MkRegistry;
+use crate::registry::RegistryItem;
+use crate::util::unique_id::UniqueId;
 
-pub fn register()
+
+pub struct MkAction
 {
-    pipewire::register();
+    pub unique_id: UniqueId
+}
+
+
+impl RegistryItem for MkAction
+{
+    fn unique_id(&self) -> UniqueId
+    {
+        self.unique_id.clone()
+    }
+
+    fn name(&self) -> String
+    {
+        t!(format!("actions.{}.name", self.unique_id.as_str()).as_str()).to_string()
+    }
+}
+
+
+
+pub fn register(registry: &mut MkRegistry<MkAction>)
+{
+    pipewire::register(registry);
 }
\ No newline at end of file
diff --git a/Linux/src/actions/pipewire/mod.rs b/Linux/src/actions/pipewire/mod.rs
index 2ba9245..b59729e 100644
--- a/Linux/src/actions/pipewire/mod.rs
+++ b/Linux/src/actions/pipewire/mod.rs
@@ -1,10 +1,14 @@
-use super::registry::{MkAction, register_action};
-
+use crate::registry::MkRegistry;
+use crate::util::unique_id::UniqueId;
+use super::MkAction;
 
 pub mod set_volume;
 
 
-pub fn register()
+pub fn register(registry: &mut MkRegistry<MkAction>)
 {
-    register_action(MkAction::new("Set volume"));
+    registry.register(MkAction 
+    {
+        unique_id: UniqueId::new("pipewire.set_volume")
+    });
 }
\ No newline at end of file
diff --git a/Linux/src/actions/registry.rs b/Linux/src/actions/registry.rs
deleted file mode 100644
index 9320575..0000000
--- a/Linux/src/actions/registry.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-use log::info;
-
-
-pub struct MkAction
-{
-    // TODO prepare for i18n by making this a translation key?
-    name: &'static str
-}
-
-
-impl MkAction 
-{
-    pub fn new(name: &'static str) -> Self
-    {
-        Self
-        {
-            name
-        }
-    }
-}
-
-
-pub fn register_action(action: MkAction)
-{
-    info!("Registered action: {}", action.name);
-}
\ No newline at end of file
diff --git a/Linux/src/config.rs b/Linux/src/config.rs
index f314c2b..9fc3edc 100644
--- a/Linux/src/config.rs
+++ b/Linux/src/config.rs
@@ -2,10 +2,11 @@ use std::path::{Path, PathBuf};
 use std::io::{Error, Read, Write};
 use platform_dirs::AppDirs;
 
-
+#[derive(Debug)]
 pub struct Config
 {
-    root: PathBuf
+    root: PathBuf,
+    pub device_id: Option<String>
 }
 
 
@@ -17,7 +18,8 @@ impl Config
 
         Self
         {
-            root: appdirs.data_dir
+            root: appdirs.data_dir,
+            device_id: None
         }
     }
 
diff --git a/Linux/src/devices/emulator/mod.rs b/Linux/src/devices/emulator/mod.rs
index a051db6..0f39949 100644
--- a/Linux/src/devices/emulator/mod.rs
+++ b/Linux/src/devices/emulator/mod.rs
@@ -1,17 +1,18 @@
-//use emulatorwindow::EmulatorWindow;
-//use relm4::prelude::*;
-//use relm4::gtk::prelude::GtkApplicationExt;
-
-
-use super::registry::{MkDevice, register_device};
+use crate::registry::MkRegistry;
+use crate::util::unique_id::UniqueId;
+use super::MkDevice;
 
 
 pub mod emulatorwindow;
 
 
-pub fn register()
+
+
+pub fn register(registry: &mut MkRegistry<MkDevice>)
 {
-    register_device(MkDevice::new("Emulator"));
+    registry.register(MkDevice {
+        unique_id: UniqueId::new("emulator")
+    });
 }
 
 /*
diff --git a/Linux/src/devices/mod.rs b/Linux/src/devices/mod.rs
index c457b1c..0cd95d7 100644
--- a/Linux/src/devices/mod.rs
+++ b/Linux/src/devices/mod.rs
@@ -1,10 +1,35 @@
-pub mod registry;
 pub mod emulator;
 pub mod serial_min;
 
 
-pub fn register()
+use crate::registry::MkRegistry;
+use crate::registry::RegistryItem;
+use crate::util::unique_id::UniqueId;
+
+
+pub struct MkDevice
 {
-    emulator::register();
-    serial_min::register();
+    pub unique_id: UniqueId
+}
+
+
+impl RegistryItem for MkDevice
+{
+    fn unique_id(&self) -> UniqueId
+    {
+        self.unique_id.clone()
+    }
+
+    fn name(&self) -> String
+    {
+        t!(format!("devices.{}.name", self.unique_id.as_str()).as_str()).to_string()
+    }
+}
+
+
+
+pub fn register(registry: &mut MkRegistry<MkDevice>)
+{
+    emulator::register(registry);
+    serial_min::register(registry);
 }
\ No newline at end of file
diff --git a/Linux/src/devices/registry.rs b/Linux/src/devices/registry.rs
deleted file mode 100644
index db5535a..0000000
--- a/Linux/src/devices/registry.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-use log::info;
-
-
-pub struct MkDevice
-{
-    // TODO prepare for i18n by making this a translation key?
-    name: &'static str
-}
-
-
-impl MkDevice 
-{
-    pub fn new(name: &'static str) -> Self
-    {
-        Self
-        {
-            name
-        }
-    }
-}
-
-
-pub fn register_device(action: MkDevice)
-{
-    info!("Registered device: {}", action.name);
-}
\ No newline at end of file
diff --git a/Linux/src/devices/serial_min/mod.rs b/Linux/src/devices/serial_min/mod.rs
index 70a1b0a..61f3eb2 100644
--- a/Linux/src/devices/serial_min/mod.rs
+++ b/Linux/src/devices/serial_min/mod.rs
@@ -1,7 +1,11 @@
-use super::registry::{MkDevice, register_device};
+use crate::registry::MkRegistry;
+use crate::util::unique_id::UniqueId;
+use super::MkDevice;
 
 
-pub fn register()
+pub fn register(registry: &mut MkRegistry<MkDevice>)
 {
-    register_device(MkDevice::new("Serial device using MIN protocol"));
+    registry.register(MkDevice {
+        unique_id: UniqueId::new("serial_min")
+    });
 }
\ No newline at end of file
diff --git a/Linux/src/main.rs b/Linux/src/main.rs
index 60342ed..82339a6 100644
--- a/Linux/src/main.rs
+++ b/Linux/src/main.rs
@@ -1,4 +1,7 @@
+use std::rc::Rc;
 use env_logger::Env;
+use mainwindow::MainWindowViewModel;
+use orchestrator::Orchestrator;
 use relm4::prelude::*;
 
 #[macro_use]
@@ -7,10 +10,13 @@ extern crate rust_i18n;
 i18n!("locales");
 
 
+pub mod util;
+pub mod registry;
 pub mod devices;
 pub mod actions;
 
 pub mod config;
+pub mod orchestrator;
 pub mod mainwindow;
 
 fn main()
@@ -19,20 +25,13 @@ fn main()
 //        .format_timestamp(None)
         .init();
 
-    devices::register();
-    actions::register();
-
     relm4_icons::initialize_icons();
 
-    load_config();
+    let orchestrator = Rc::new(Orchestrator::new());
 
     let app = RelmApp::new("com.github.mvrens.massiveknob");
-    app.run::<mainwindow::MainWindow>(());
-}
-
-
-fn load_config()
-{
-    //let config = config::Config::new();
-    //config.get_reader(name)
+    app.run::<mainwindow::MainWindow>(MainWindowViewModel
+    {
+        orchestrator: Rc::clone(&orchestrator)
+    });
 }
\ No newline at end of file
diff --git a/Linux/src/mainwindow.rs b/Linux/src/mainwindow.rs
index 47e6d9a..2d776d0 100644
--- a/Linux/src/mainwindow.rs
+++ b/Linux/src/mainwindow.rs
@@ -1,11 +1,31 @@
+use std::rc::Rc;
 use gtk::prelude::*;
 use relm4::prelude::*;
 
+use crate::orchestrator::Orchestrator;
+
 pub struct MainWindow
 { 
 }
 
 
+pub struct MainWindowViewModel
+{
+    pub orchestrator: Rc<Orchestrator>
+}
+
+
+impl std::fmt::Debug for MainWindowViewModel
+{
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result 
+    {
+        f.debug_struct("MainWindowViewModel")
+            // Skip orchestrator
+            .finish()
+    }
+}
+
+
 #[derive(Debug)]
 pub enum MainWindowMsg
 {
@@ -19,7 +39,7 @@ pub struct MainWindowWidgets
 
 impl SimpleComponent for MainWindow
 {
-    type Init = ();
+    type Init = MainWindowViewModel;
     type Input = MainWindowMsg;
     type Output = ();
     type Root = gtk::Window;
diff --git a/Linux/src/orchestrator/mod.rs b/Linux/src/orchestrator/mod.rs
new file mode 100644
index 0000000..e5deacc
--- /dev/null
+++ b/Linux/src/orchestrator/mod.rs
@@ -0,0 +1,53 @@
+use crate::actions;
+use crate::actions::MkAction;
+use crate::config::Config;
+use crate::devices;
+use crate::devices::MkDevice;
+use crate::registry::MkRegistry;
+use crate::util::unique_id::UniqueId;
+
+
+pub struct Orchestrator
+{
+    config: Config,
+
+    device_registry: MkRegistry<MkDevice>,
+    action_registry: MkRegistry<MkAction>
+}
+
+
+impl Orchestrator
+{
+    pub fn new() -> Self
+    {
+        let config = Config::new();
+        //config.get_reader(name)
+
+        let mut device_registry = MkRegistry::new();
+        let mut action_registry = MkRegistry::new();
+
+        devices::register(&mut device_registry);
+        actions::register(&mut action_registry);
+
+        Self
+        {
+            config,
+            device_registry,
+            action_registry
+        }
+    }
+
+
+    pub fn current_device(&self) -> Option<&MkDevice>
+    {
+        let Some(device_id) = &self.config.device_id else { return None };
+        self.device_registry.by_id(UniqueId::new(device_id.as_str()))
+    }
+
+
+    pub fn set_current_device_id(&self, id: &str)
+    {
+        // TODO if changed, unload old device, activate new
+        todo!("Store in config");
+    }
+}
\ No newline at end of file
diff --git a/Linux/src/registry/mod.rs b/Linux/src/registry/mod.rs
new file mode 100644
index 0000000..ad465ec
--- /dev/null
+++ b/Linux/src/registry/mod.rs
@@ -0,0 +1,50 @@
+use std::collections::HashMap;
+use log::info;
+
+use crate::util::unique_id::UniqueId;
+
+
+pub trait RegistryItem
+{
+    /// The unique ID of the item. This should remain stable across releases for
+    /// the purpose of storing it in the user's configuration.
+    fn unique_id(&self) -> UniqueId;
+
+    /// The name of the item for display purposes.
+    fn name(&self) -> String;
+}
+
+
+
+pub struct MkRegistry<T> where T: RegistryItem
+{
+    items: HashMap<String, T>
+}
+
+
+
+impl<'a, T> MkRegistry<T> where T: RegistryItem
+{
+    pub fn new() -> Self
+    {
+        Self
+        {
+            items: HashMap::new()
+        }
+    }
+
+
+    pub fn register(&mut self, device: T)
+    {    
+        let device_id = device.unique_id();        
+
+        info!("Registered device: [{}] {}", device_id.as_str(), device.name());
+        self.items.insert(String::from(device_id.as_str()), device);
+    }
+
+
+    pub fn by_id(&self, id: UniqueId) -> Option<&T>
+    {
+        self.items.get(id.as_str())
+    }
+}
\ No newline at end of file
diff --git a/Linux/src/util/mod.rs b/Linux/src/util/mod.rs
new file mode 100644
index 0000000..358541a
--- /dev/null
+++ b/Linux/src/util/mod.rs
@@ -0,0 +1 @@
+pub mod unique_id;
\ No newline at end of file
diff --git a/Linux/src/util/unique_id.rs b/Linux/src/util/unique_id.rs
new file mode 100644
index 0000000..4df9136
--- /dev/null
+++ b/Linux/src/util/unique_id.rs
@@ -0,0 +1,38 @@
+use regex::Regex;
+
+
+pub struct UniqueId
+{
+    inner: String,
+}
+
+
+impl UniqueId 
+{
+    pub fn new(id: &str) -> Self
+    {
+        assert!(is_valid_unique_id(id), "Id '{id}' has invalid characters");
+        UniqueId { inner: id.to_string() }
+    }
+
+    pub fn as_str(&self) -> &str
+    {
+        self.inner.as_str()
+    }
+}
+
+
+fn is_valid_unique_id(id: &str) -> bool 
+{
+    let re = Regex::new(r"^[a-zA-Z0-9\.\-_]+$").unwrap();
+    re.is_match(id)
+}
+
+
+impl Clone for UniqueId
+{
+    fn clone(&self) -> Self 
+    {
+        Self { inner: self.inner.clone() }
+    }    
+}
\ No newline at end of file