diff --git a/task01/src/com/example/task01/Task01Main.java b/task01/src/com/example/task01/Task01Main.java
index 5dfc11b..c9417c8 100644
--- a/task01/src/com/example/task01/Task01Main.java
+++ b/task01/src/com/example/task01/Task01Main.java
@@ -1,20 +1,31 @@
 package com.example.task01;
 
+import javax.swing.*;
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
+import java.io.InputStreamReader;
 
 public class Task01Main {
-    public static void main(String[] args) throws IOException, InterruptedException {
+    public static void main(String[] args) throws IOException{
         //здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
         // например вот так:
-
-        /*
         System.out.println(extractSoundName(new File("task01/src/main/resources/3727.mp3")));
-        */
+
     }
 
-    public static String extractSoundName(File file) throws IOException, InterruptedException {
-        // your implementation here
-        return "sound name";
+    public static String extractSoundName(File file) throws IOException{
+        ProcessBuilder processBuilder = new ProcessBuilder();
+        processBuilder.command("cmd.exe", "/c", "ffprobe -v error -of flat -show_format \"" + file.getAbsolutePath() + "\"");
+        processBuilder.directory(new File("C:\\ffmpeg\\bin"));
+        Process process = processBuilder.start();
+        try (BufferedReader reader = new BufferedReader(
+                new InputStreamReader(process.getInputStream()))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                if (line.contains("title")) return line.split("\"")[1];
+            }
+        }
+        return null;
     }
 }
diff --git a/task02/src/com/example/task02/Task02Main.java b/task02/src/com/example/task02/Task02Main.java
index 750f7ba..e908fc7 100644
--- a/task02/src/com/example/task02/Task02Main.java
+++ b/task02/src/com/example/task02/Task02Main.java
@@ -1,23 +1,24 @@
 package com.example.task02;
 
+import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class Task02Main {
     public static void main(String[] args) throws IOException, InterruptedException {
         //здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
         // например вот так:
-
-        /*
         System.out.println(listFiles(Paths.get("task02/src/main/resources/")));
-        */
-
     }
 
-    public static List<Path> listFiles(Path rootDir) throws IOException, InterruptedException {
-        // your implementation here
-
-        return null;
+    public static List<Path> listFiles(Path rootDir) throws IOException{
+        try (Stream<Path> files = Files.walk(rootDir)){
+            return files.filter(Files::isRegularFile).collect(Collectors.toList());
+        }
     }
 }
diff --git a/task03/src/com/example/task03/SampleData.java b/task03/src/com/example/task03/SampleData.java
index 0654af5..5b1778c 100644
--- a/task03/src/com/example/task03/SampleData.java
+++ b/task03/src/com/example/task03/SampleData.java
@@ -1,10 +1,11 @@
 package com.example.task03;
 
+import java.io.Serializable;
 import java.util.Date;
 import java.util.Objects;
 
-public class SampleData {
-    static final long serialVersionUID = 132706691457162967L;
+public class SampleData implements Serializable {
+    private static final long serialVersionUID = 132706691457162967L;
 
     String name;
     int value;
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 740fff1..11d6c41 100644
--- a/task03/src/com/example/task03/Task03Main.java
+++ b/task03/src/com/example/task03/Task03Main.java
@@ -2,6 +2,7 @@
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.ObjectInputStream;
 
 public class Task03Main {
     public static void main(String[] args) throws IOException, ClassNotFoundException {
@@ -15,7 +16,8 @@ public static void main(String[] args) throws IOException, ClassNotFoundExceptio
     }
 
     public static SampleData deserialize(InputStream inputStream) throws IOException, ClassNotFoundException {
-        // your implementation here
-        return null;
+        try (ObjectInputStream ois = new ObjectInputStream(inputStream)) {
+            return (SampleData) ois.readObject();
+        }
     }
 }