diff --git a/src/commands/run.rs b/src/commands/run.rs
index 943f6c5..d2190e8 100644
--- a/src/commands/run.rs
+++ b/src/commands/run.rs
@@ -1,8 +1,8 @@
-use std::io::Read;
+use std::{io::Read, sync::{Arc, Mutex}};
 
-use cpal::{traits::{DeviceTrait, HostTrait}, Device};
+use cpal::{traits::{DeviceTrait, HostTrait, StreamTrait}, Device};
 
-use crate::args::Run;
+use crate::{args::Run, device::virtual_device};
 
 pub fn run(run: Run) {
     let config = std::path::Path::new(&run.config);
@@ -32,19 +32,19 @@ pub fn run(run: Run) {
     let mut virtual_devices = Vec::new();
     for virtual_device in config.virtual_devices {
         let device = crate::device::virtual_device::VirtualDevice::new(virtual_device.name, virtual_device.channels, virtual_device.sample_rate);
-        virtual_devices.push(device);
+        virtual_devices.push(Arc::new(Mutex::new(device)));
     }
 
-    for input_route in config.routes.input {
+    for input_route in &config.routes.input {
         println!("Input: {}", input_route.name);
         println!("    Virtual device: {}", input_route.virtual_device);
-        if virtual_devices.iter().any(|device| device.name == input_route.virtual_device) {
+        if virtual_devices.iter().any(|device| device.lock().unwrap().name == input_route.virtual_device) {
             println!("        Found");
         } else {
             println!("        Not found");
         }
 
-        match input_route.device {
+        match &input_route.device {
             crate::config::Device::Local { local } => {
                 println!("    Local device: {}", local.name);
                 if input_devices
@@ -66,16 +66,16 @@ pub fn run(run: Run) {
         }
     }
 
-    for output_route in config.routes.output {
+    for output_route in &config.routes.output {
         println!("Output: {}", output_route.name);
         println!("    Virtual device: {}", output_route.input.virtual_device);
-        if virtual_devices.iter().any(|device| device.name == output_route.input.virtual_device) {
+        if virtual_devices.iter().any(|device| device.lock().unwrap().name == output_route.input.virtual_device) {
             println!("        Found");
         } else {
             println!("        Not found");
         }
 
-        match output_route.device {
+        match &output_route.device {
             crate::config::Device::Local { local } => {
                 println!("    Local device: {}", local.name);
                 if output_devices
@@ -96,4 +96,38 @@ pub fn run(run: Run) {
             }
         }
     }
+
+    // attach real device to virtual device
+    for input_route in &config.routes.input {
+        match &input_route.device {
+            crate::config::Device::Local { local } => {
+                let device = input_devices
+                    .iter()
+                    .find(|device| device.name().unwrap() == local.name)
+                    .unwrap();
+                let config = device.default_input_config().unwrap();
+                let channels = config.channels();
+                let virtual_devices = virtual_devices.iter().filter(|device| device.lock().unwrap().name == input_route.virtual_device).map(|d| d.clone()).collect::<Vec<_>>();
+                let mut stream = device.build_input_stream(
+                    &config.into(),
+                    {
+                        move |data, _| {
+                            for (i, buffer) in data.chunks(channels as usize).enumerate() {
+                                let buffer = buffer.to_vec();
+                                for virtual_device in &virtual_devices {
+                                    virtual_device.lock().unwrap().write_input(i as u8, buffer.clone());
+                                }
+                            }
+                        }
+                    },
+                    move |err| eprintln!("An error occurred on the input stream: {}", err),
+                    None
+                ).unwrap();
+                stream.play().unwrap();
+            }
+            crate::config::Device::Remote { remote } => {
+                unimplemented!();
+            }
+        }
+    }
 }
diff --git a/src/device/virtual_device.rs b/src/device/virtual_device.rs
index 550befe..82e4e82 100644
--- a/src/device/virtual_device.rs
+++ b/src/device/virtual_device.rs
@@ -3,7 +3,7 @@ pub struct VirtualDevice {
     pub channels: u8,
     pub sample_rate: u32,
     output_index: Vec<usize>,
-    output_buffer: Vec<Vec<f64>>,
+    output_buffer: Vec<Vec<f32>>,
 }
 
 impl VirtualDevice {
@@ -27,7 +27,7 @@ impl VirtualDevice {
         self.output_index.len() - 1
     }
 
-    pub fn take_output(&mut self, index: usize, channel: u8, take_size: usize) -> Option<Vec<f64>> {
+    pub fn take_output(&mut self, index: usize, channel: u8, take_size: usize) -> Option<Vec<f32>> {
         let mut buffer = Vec::with_capacity(take_size);
         let start = self.output_index[index];
         let end = start + take_size;
@@ -54,7 +54,7 @@ impl VirtualDevice {
         Some(buffer)
     }
 
-    pub fn write_input(&mut self, channel: u8, buffer: Vec<f64>) {
+    pub fn write_input(&mut self, channel: u8, buffer: Vec<f32>) {
         self.output_buffer[channel as usize].extend(buffer);
     }
 }
\ No newline at end of file