diff --git a/README.md b/README.md
index 10d35ee..1fbeee6 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,18 @@ you can customize WaveformSeekBar, all of this attributes can change via xml or
 |wave_progress_color|Color|`waveProgressColor`|Reached Waves color, default color is `Color.WHITE`|
 | - |IntArray|`sample`|Sample data for drawing waves, default is `null`|
 
+# Reduce size
+Add ``` android:extractNativeLibs="false" ``` to application in the Manifest.xml
+
+``` xml
+<application
+      . . .
+    android:extractNativeLibs="false"
+      . . . >
+    <activity . . ./>
+</application>
+```
+
 # License
 ```
 Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d2373ab..cd8e447 100755
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,7 +11,8 @@
             android:label="@string/app_name"
             android:supportsRtl="false"
             android:theme="@style/AppTheme"
-            android:extractNativeLibs="false">
+            android:extractNativeLibs="false"
+            android:requestLegacyExternalStorage="true">
         <activity
                 android:name=".activity.SelectAudioActivity">
         </activity>
diff --git a/app/src/main/java/com/masoudss/activity/MainActivity.kt b/app/src/main/java/com/masoudss/activity/MainActivity.kt
index 9c8e392..c75d3e7 100644
--- a/app/src/main/java/com/masoudss/activity/MainActivity.kt
+++ b/app/src/main/java/com/masoudss/activity/MainActivity.kt
@@ -146,7 +146,9 @@ class MainActivity : AppCompatActivity() {
 
                 var waves: IntArray = intArrayOf()
 
-                WaveformOptions.getSampleFrom(path) {
+                WaveformOptions.init(this@MainActivity)
+
+                WaveformOptions.getSampleFrom(path!!) {
                     waves = it
                 }
 
diff --git a/lib/build.gradle b/lib/build.gradle
index c02580b..54b2b96 100755
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -28,7 +28,7 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "androidx.appcompat:appcompat:1.2.0"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'com.github.lincollincol:Amplituda:1.3'
+    implementation 'com.github.lincollincol:Amplituda:1.4'
 }
 repositories {
     mavenCentral()
diff --git a/lib/src/main/java/com/masoudss/lib/WaveformOptions.kt b/lib/src/main/java/com/masoudss/lib/WaveformOptions.kt
index 804542a..e0361c8 100644
--- a/lib/src/main/java/com/masoudss/lib/WaveformOptions.kt
+++ b/lib/src/main/java/com/masoudss/lib/WaveformOptions.kt
@@ -1,15 +1,23 @@
 package com.masoudss.lib
 
+import android.content.Context
 import linc.com.amplituda.Amplituda
 import java.io.File
 
 object WaveformOptions {
 
-    private val amplituda by lazy { Amplituda() }
+    private var amplituda: Amplituda? = null
+
+    @JvmStatic
+    fun init(context: Context) {
+        if(amplituda == null) {
+            amplituda = Amplituda(context)
+        }
+    }
 
     @JvmStatic
     fun getSampleFrom(file: File, onSuccess:(samples: IntArray) -> Unit) {
-        amplituda.fromFile(file)
+        amplituda!!.fromFile(file)
             .amplitudesAsList {
                 onSuccess(it.toIntArray())
             }
@@ -17,7 +25,7 @@ object WaveformOptions {
 
     @JvmStatic
     fun getSampleFrom(path: String, onSuccess: (IntArray) -> Unit) {
-        amplituda.fromPath(path)
+        amplituda!!.fromPath(path)
             .amplitudesAsList {
                 onSuccess(it.toIntArray())
             }