diff --git a/app/build.gradle b/app/build.gradle
index 2e15b66..cb61319 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -14,20 +14,6 @@ android {
 		setProperty("archivesBaseName", "Audinaut $versionName")
 		resConfigs "de", "es", "fr", "hu", "nl", "pt-rPT", "ru", "sv"
 	}
-	buildTypes {
-		release {
-			minifyEnabled true
-			shrinkResources true
-			proguardFiles 'proguard.cfg'
-			zipAlignEnabled true
-		}
-		fix {
-			minifyEnabled true
-			shrinkResources true
-			proguardFiles 'proguard.cfg'
-			zipAlignEnabled true
-		}
-	}
 
 	packagingOptions {
 		exclude 'META-INF/beans.xml'
@@ -47,6 +33,7 @@ android {
 
 dependencies {
 	compile fileTree(include: ['*.jar'], dir: 'libs')
+	compile 'com.esotericsoftware:kryo:4.0.0'
 	compile 'com.android.support:support-v4:23.4.+'
 	compile 'com.android.support:appcompat-v7:23.4.+'
 	compile 'com.android.support:mediarouter-v7:23.4.+'
diff --git a/app/libs/kryo-2.21-all.jar b/app/libs/kryo-2.21-all.jar
deleted file mode 100644
index 83f8b0f..0000000
Binary files a/app/libs/kryo-2.21-all.jar and /dev/null differ
diff --git a/app/proguard.cfg b/app/proguard.cfg
deleted file mode 100644
index a18ae91..0000000
--- a/app/proguard.cfg
+++ /dev/null
@@ -1,62 +0,0 @@
--dontobfuscate
--optimizationpasses 5
--dontusemixedcaseclassnames
--dontskipnonpubliclibraryclasses
--dontpreverify
--verbose
--optimizations !code/simplification/arithmetic,!field/*,!class/merging/*,!code/allocation/variable
-
--keep public class * extends android.app.Activity
--keep public class * extends android.app.Application
--keep public class * extends android.app.Service
--keep public class * extends android.content.BroadcastReceiver
--keep public class * extends android.content.ContentProvider
--keep public class * extends android.app.backup.BackupAgentHelper
--keep public class * extends android.preference.Preference
-
-# Kryo
--keep,allowshrinking class java.beans.** { *; }
--keep,allowshrinking class sun.reflect.** { *; }
--dontwarn sun.reflect.**
--dontwarn java.beans.**
--keepclassmembers public class com.esotericsoftware.** { *; }
-
--keepclasseswithmembernames class * {
-    native <methods>;
-}
-
--keepclassmembers class * extends android.app.Activity {
-   public void *(android.view.View);
-}
-
--keepclassmembers public class * extends android.view.View {
-   void set*(***);
-   *** get*();
-}
-
--keepclassmembers enum * {
-    public static **[] values();
-    public static ** valueOf(java.lang.String);
-}
-
--keep class * implements android.os.Parcelable {
-  public static final android.os.Parcelable$Creator *;
-}
-
--keep class android.support.v7.app.MediaRouteButton { *; }
--keep class android.support.v7.widget.SearchView { *; }
-
--dontwarn android.support.**
-
-# DLNA/Cling
--keep class org.fourthline.cling.** { *; }
--keep interface org.fourthline.cling.** { *; }
--dontwarn javax.**
--dontwarn org.objectweb.**
--dontwarn org.slf4j.**
--dontwarn org.mortbay.**
--dontwarn org.fourthline.**
--dontwarn org.seamless.**
--dontwarn org.eclipse.**
--dontwarn java.**
--keepattributes *Annotation*, InnerClasses
\ No newline at end of file