diff --git a/README.md b/README.md
index d6a3ba6..8e6b4e4 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ public class App extends Application {
                 // Great!
             }
             @Override
-            public void onFailure(FFmpegNotSupportedException error) {
+            public void onFailure(Exception error) {
                 // FFmpeg is not supported by device
             }
         });
@@ -44,7 +44,7 @@ public class App extends Application {
 
 3 - Convert audio files async
 ```java
-File wavFile = new File(Environment.getExternalStorageDirectory(), "my_audio.flac");
+File flacFile = new File(Environment.getExternalStorageDirectory(), "my_audio.flac");
 IConvertCallback callback = new IConvertCallback() {
     @Override
     public void onSuccess(File convertedFile) {
@@ -57,11 +57,15 @@ IConvertCallback callback = new IConvertCallback() {
 };
 AndroidAudioConverter.with(this)
     // Your current audio file
-    .setFile(wavFile)  
+    .setFile(flacFile)  
+    
     // Your desired audio format 
-    .setFormat(AndroidAudioConverter.AudioFormat.MP3)
+    .setFormat(AudioFormat.MP3)
+    
     // An callback to know when conversion is finished
     .setCallback(callback)
+    
+    // Start conversion
     .convert();
 ```
 
@@ -75,7 +79,7 @@ repositories {
 }
 
 dependencies {
-  compile 'com.github.adrielcafe:AndroidAudioConverter:0.0.7'
+  compile 'com.github.adrielcafe:AndroidAudioConverter:0.0.8'
 }
 ```
 
diff --git a/app/src/main/java/cafe/adriel/androidaudioconverter/sample/MainActivity.java b/app/src/main/java/cafe/adriel/androidaudioconverter/sample/MainActivity.java
index 1e8c58c..243b7f3 100644
--- a/app/src/main/java/cafe/adriel/androidaudioconverter/sample/MainActivity.java
+++ b/app/src/main/java/cafe/adriel/androidaudioconverter/sample/MainActivity.java
@@ -12,6 +12,7 @@
 
 import cafe.adriel.androidaudioconverter.AndroidAudioConverter;
 import cafe.adriel.androidaudioconverter.callback.IConvertCallback;
+import cafe.adriel.androidaudioconverter.model.AudioFormat;
 
 public class MainActivity extends AppCompatActivity {
 
@@ -48,7 +49,7 @@ public void onFailure(Exception error) {
         Toast.makeText(this, "Converting audio file...", Toast.LENGTH_SHORT).show();
         AndroidAudioConverter.with(this)
                 .setFile(wavFile)
-                .setFormat(AndroidAudioConverter.AudioFormat.MP3)
+                .setFormat(AudioFormat.MP3)
                 .setCallback(callback)
                 .convert();
     }
diff --git a/lib/src/main/java/cafe/adriel/androidaudioconverter/AndroidAudioConverter.java b/lib/src/main/java/cafe/adriel/androidaudioconverter/AndroidAudioConverter.java
index aeda380..95bf226 100644
--- a/lib/src/main/java/cafe/adriel/androidaudioconverter/AndroidAudioConverter.java
+++ b/lib/src/main/java/cafe/adriel/androidaudioconverter/AndroidAudioConverter.java
@@ -11,23 +11,10 @@
 
 import cafe.adriel.androidaudioconverter.callback.IConvertCallback;
 import cafe.adriel.androidaudioconverter.callback.ILoadCallback;
+import cafe.adriel.androidaudioconverter.model.AudioFormat;
 
 public class AndroidAudioConverter {
 
-    public enum AudioFormat {
-        AAC,
-        MP3,
-        M4A,
-        WMA,
-        WAV,
-        FLAC;
-
-        @Override
-        public String toString() {
-            return name().toLowerCase();
-        }
-    }
-
     private static boolean loaded;
 
     private Context context;
@@ -142,7 +129,7 @@ public void onFinish() {
 
     private static File getConvertedFile(File originalFile, AudioFormat format){
         String[] f = originalFile.getPath().split("\\.");
-        String filePath = originalFile.getPath().replace(f[f.length - 1], format.toString());
+        String filePath = originalFile.getPath().replace(f[f.length - 1], format.getFormat());
         return new File(filePath);
     }
 }
\ No newline at end of file
diff --git a/lib/src/main/java/cafe/adriel/androidaudioconverter/model/AudioFormat.java b/lib/src/main/java/cafe/adriel/androidaudioconverter/model/AudioFormat.java
new file mode 100644
index 0000000..4bc2ac8
--- /dev/null
+++ b/lib/src/main/java/cafe/adriel/androidaudioconverter/model/AudioFormat.java
@@ -0,0 +1,14 @@
+package cafe.adriel.androidaudioconverter.model;
+
+public enum AudioFormat {
+    AAC,
+    MP3,
+    M4A,
+    WMA,
+    WAV,
+    FLAC;
+
+    public String getFormat() {
+        return name().toLowerCase();
+    }
+}
\ No newline at end of file