Load the albums list first and use its length as a progress range estimation

src/main.rs

@@ -49,18 +49,21 @@ fn main() -> Result<(), Error> {
 }
 
 fn load_albums(ui: &mut Cursive) {
+    let mut registry = REGISTRY.lock().unwrap();
+    if let Err(error) = registry.load_albums_file() {
+        eprintln!("Something went wrong: {}", error);
+        quit(ui);
+    }
+
     let cb = ui.cb_sink().clone();
     ui.add_layer(
         Dialog::around(ProgressBar::new()
-                .range(0, 603) // FIXME: No idea what to put here.
+                .range(0, registry.albums_list.len())
                 .with_task(move |counter| {
                     let mut registry = REGISTRY.lock().unwrap();
                     if let Err(error) = registry.load_albums_fs(&counter) {
                         eprintln!("Something went wrong: {}", error);
                         cb.send(Box::new(quit));
-                    } else if let Err(error) = registry.load_albums_file() {
-                        eprintln!("Something went wrong: {}", error);
-                        cb.send(Box::new(quit));
                     } else {
                         cb.send(Box::new(select_albums));
                     }

src/registry.rs

@@ -40,7 +40,7 @@ impl Registry {
             ));
             counter.tick(1);
         }
-        counter.set(603);
+        counter.set(self.albums_fs.len());
         Ok(())
     }