diff --git a/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java b/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java
index 0554c2f..d4acdfe 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java
@@ -86,6 +86,7 @@
         try{
             mp.stop();
             mp.prepare();
+            mp.release();
         }catch(IllegalStateException e){
             e.printStackTrace();
         }catch(Exception e){
@@ -152,8 +153,8 @@
             }
         });
 
-        Button Teisi = (Button)findViewById(R.id.button3);
-        Teisi.setOnClickListener(new View.OnClickListener(){
+        Button RTeisi = (Button)findViewById(R.id.button3);
+        RTeisi.setOnClickListener(new View.OnClickListener(){
             public void onClick(View x){
                 TextView textView1 = (TextView)findViewById(R.id.text);
                 textView1.setText("Rokuon Stop!");
@@ -169,6 +170,15 @@
                 startPlay();
             }
         });
+
+        Button STeisi = (Button)findViewById(R.id.button5);
+        STeisi.setOnClickListener(new View.OnClickListener(){
+            public void onClick(View x){
+                TextView textView1 = (TextView)findViewById(R.id.text);
+                textView1.setText("Saisei Stop!");
+                stopPlay();
+            }
+        });
     }
 
     private Handler handler = new Handler(){
diff --git a/app/src/main/res/layout/activity_voice_test.xml b/app/src/main/res/layout/activity_voice_test.xml
index 331623f..1e65f9c 100644
--- a/app/src/main/res/layout/activity_voice_test.xml
+++ b/app/src/main/res/layout/activity_voice_test.xml
@@ -26,7 +26,7 @@
             android:id="@+id/button3"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="停止" />
+            android:text="録音停止" />
 
         <Button
             android:id="@+id/button4"
@@ -34,6 +34,12 @@
             android:layout_height="wrap_content"
             android:text="再生" />
 
+        <Button
+            android:id="@+id/button5"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="再生停止" />
+
         <TextView
             android:id="@+id/text"
             android:layout_width="match_parent"
@@ -50,10 +56,11 @@
 
     <SeekBar
         android:id="@+id/positionBar"
-        android:layout_width="340dp"
-        android:layout_height="55dp"
+        android:layout_width="290dp"
+        android:layout_height="49dp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/linearLayout"
-        tools:layout_editor_absoluteX="36dp" />
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/linearLayout" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file