diff --git a/src/main.rs b/src/main.rs
index 17bd4f4..4d24790 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,24 +1,23 @@
-use std::{
-    fs::File,
-    sync::{Arc, Mutex},
-};
+use std::sync::{Arc, Mutex};
 
-use marlinbox_rs::{card_reader, library::Library, service};
+use marlinbox_rs::{card_reader, service, Library};
 
 const VID: u16 = 0xffff;
 const PID: u16 = 0x0035;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    let music: Arc<Mutex<Library>> = Arc::new(Mutex::new(serde_json::from_reader(File::open(
-        "music.json",
-    )?)?));
+    tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
+        .init();
+    let music: Arc<Mutex<Library>> = Arc::new(Mutex::new(Library::from_file("music.json")?));
 
-    let (tx, rx) = crossbeam_channel::bounded(10);
+    let (tx_card, rx_card) = crossbeam_channel::bounded(10);
+    let (tx_manager_shutdown, rx_manager_shutdown) = crossbeam_channel::bounded(1);
 
     let mut handles = vec![];
-    let reader_handle = std::thread::spawn(move || card_reader::read(VID, PID, &tx));
+    let reader_handle = std::thread::spawn(move || card_reader::read(VID, PID, &tx_card));
     handles.push(reader_handle);
-    service::run(&rx, &music)?;
+    service::run(&music, tx_manager_shutdown, rx_manager_shutdown, &rx_card)?;
 
     for handle in handles {
         let _ = handle.join().unwrap();