diff --git a/app/build.gradle b/app/build.gradle
index 00f0861..ae8f48f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,5 +1,7 @@
 apply plugin: 'com.android.application'
 
+import com.android.build.OutputFile
+
 android {
     compileSdkVersion 25
     buildToolsVersion "25.0.2"
@@ -26,7 +28,8 @@ android {
             minifyEnabled false
         }
         release {
-            minifyEnabled false
+            shrinkResources true
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             signingConfig signingConfigs.release
         }
@@ -34,14 +37,25 @@ android {
     applicationVariants.all { variant ->
         variant.outputs.each { output ->
             def file = output.packageApplication.outputFile
-            def fileName = org.apache.commons.io.FilenameUtils.getExtension(android.defaultConfig.applicationId) + "-" + android.defaultConfig.versionName + "-" + variant.buildType.name + ".apk"
+            def abi = output.getFilter(OutputFile.ABI)
+            if (abi == null)
+                abi = "universal";
+            def fileName = org.apache.commons.io.FilenameUtils.getExtension(android.defaultConfig.applicationId) + "-" + abi + "-" + android.defaultConfig.versionName + "-" + variant.buildType.name + ".apk"
             output.packageApplication.outputFile = new File(file.parent, fileName)
         }
     }
+    splits {
+        abi {
+            enable true
+            reset()
+            include "x86", "armeabi-v7a", "mips"
+            universalApk true
+        }
+    }
 }
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.github.axet:android-audio-library:1.0.42' // compile project(':android-audio-library')
+    compile 'com.github.axet:android-audio-library:1.0.43' // compile project(':android-audio-library')
 }
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index f45cfad..fedb26f 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -15,3 +15,14 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+-dontobfuscate
+
+-keep class com.github.axet.vorbisjni.Vorbis {*;}
+-keep class com.github.axet.lamejni.Lame {*;}
+-keep class com.github.axet.opusjni.Opus {*;}
+
+-dontwarn net.sourceforge.javaflacencoder.**
+-dontwarn com.jssrc.resample.**
+-dontwarn org.apache.commons.**
+-dontwarn org.slf4j.**
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
index f9257c5..0c1724f 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
@@ -185,6 +185,8 @@ public class RecordingActivity extends AppCompatActivity {
                 if (file != null) {
                     if (file.startsWith(ContentResolver.SCHEME_CONTENT))
                         targetUri = Uri.parse(file);
+                    else if (file.startsWith(ContentResolver.SCHEME_FILE))
+                        targetUri = Uri.parse(file);
                     else
                         targetUri = Uri.fromFile(new File(file));
                 }