diff --git a/app/build.gradle b/app/build.gradle
index 457d03c..5a1d68e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,8 +10,8 @@ android {
         applicationId "com.github.axet.audiorecorder"
         minSdkVersion 9
         targetSdkVersion 23 // 24+ file:// unable to open
-        versionCode 272
-        versionName "3.2.14"
+        versionCode 273
+        versionName "3.2.15"
     }
     signingConfigs {
         release {
@@ -57,5 +57,5 @@ android {
 
 dependencies {
     testImplementation 'junit:junit:4.12'
-    implementation 'com.github.axet:android-audio-library:1.0.111' // implementation project(':android-audio-library')
+    implementation 'com.github.axet:android-audio-library:1.0.113' // implementation project(':android-audio-library')
 }
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/MainActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/MainActivity.java
index 286c72d..fc5a030 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/MainActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/MainActivity.java
@@ -130,9 +130,9 @@ public class MainActivity extends AppCompatThemeActivity {
         getMenuInflater().inflate(R.menu.menu_main, menu);
 
         MenuItem item = menu.findItem(R.id.action_show_folder);
-        Intent intent = StorageProvider.openFolderIntent(this, storage.getStoragePath());
+        Intent intent = StorageProvider.getProvider().openFolderIntent(this, storage.getStoragePath());
         item.setIntent(intent);
-        if (!StorageProvider.isFolderCallable(this, intent, StorageProvider.getAuthority())) {
+        if (!StorageProvider.isFolderCallable(this, intent, StorageProvider.getProvider().getAuthority())) {
             item.setVisible(false);
         }
 
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 927637a..9f5912c 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
@@ -132,7 +132,6 @@ public class RecordingActivity extends AppCompatThemeActivity {
     }
 
     class RecordingReceiver extends BluetoothReceiver {
-
         @Override
         public void onConnected() {
             if (thread == null) {
@@ -210,8 +209,6 @@ public class RecordingActivity extends AppCompatThemeActivity {
 
         setContentView(R.layout.activity_recording);
 
-        setupActionBar();
-
         pitch = (PitchView) findViewById(R.id.recording_pitch);
         time = (TextView) findViewById(R.id.recording_time);
         state = (TextView) findViewById(R.id.recording_state);
@@ -221,7 +218,7 @@ public class RecordingActivity extends AppCompatThemeActivity {
         sound = new Sound(this);
 
         sampleRate = Sound.getSampleRate(this);
-        samplesUpdate = (int) (pitch.getPitchTime() * sampleRate / 1000.0);
+        samplesUpdate = (int) (pitch.getPitchTime() * sampleRate / 1000f);
         samplesUpdateStereo = samplesUpdate * Sound.getChannels(this);
 
         screen = new ScreenReceiver();
@@ -344,13 +341,6 @@ public class RecordingActivity extends AppCompatThemeActivity {
         }
     }
 
-    private void setupActionBar() {
-        ActionBar actionBar = getSupportActionBar();
-        if (actionBar != null) {
-//            actionBar.setBackgroundDrawable(new ColorDrawable(MainApplication.getActionbarColor(this)));
-        }
-    }
-
     void loadSamples() {
         File f = storage.getTempRecording();
         if (!f.exists()) {
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
index a970b8a..e69ad4d 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
@@ -67,6 +67,7 @@ public class SettingsActivity extends AppCompatSettingsThemeActivity implements
 
     public static String[] PREMS = new String[]{Manifest.permission.READ_PHONE_STATE};
 
+    @SuppressWarnings("unchecked")
     public static <T> T[] removeElement(Class<T> c, T[] aa, int i) {
         List<T> ll = Arrays.asList(aa);
         ll = new ArrayList<>(ll);
diff --git a/app/src/main/java/com/github/axet/audiorecorder/app/Storage.java b/app/src/main/java/com/github/axet/audiorecorder/app/Storage.java
index 127e29a..7e6edc3 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/app/Storage.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/app/Storage.java
@@ -46,7 +46,7 @@ public class Storage extends com.github.axet.audiolibrary.app.Storage {
             }
             return Uri.fromFile(getNextFile(f, format, ext));
         } else {
-            throw new RuntimeException("unknown uri");
+            throw new UnknownUri();
         }
     }
 
diff --git a/app/src/main/java/com/github/axet/audiorecorder/services/BluetoothReceiver.java b/app/src/main/java/com/github/axet/audiorecorder/services/BluetoothReceiver.java
index cb34f99..c49d0ac 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/services/BluetoothReceiver.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/services/BluetoothReceiver.java
@@ -108,6 +108,7 @@ public class BluetoothReceiver extends BroadcastReceiver {
     public void onStartBluetoothSco() {
     }
 
+    @SuppressWarnings("deprecation")
     public boolean startBluetooth() {
         AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
         if (am.isBluetoothScoAvailableOffCall()) {
diff --git a/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java b/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
index 1febaa7..d74aefc 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
@@ -21,6 +21,7 @@ import android.view.View;
 import android.widget.RemoteViews;
 
 import com.github.axet.androidlibrary.widgets.OptimizationPreferenceCompat;
+import com.github.axet.androidlibrary.widgets.ProximityShader;
 import com.github.axet.audiolibrary.app.Storage;
 import com.github.axet.audiorecorder.R;
 import com.github.axet.audiorecorder.activities.MainActivity;
@@ -130,6 +131,7 @@ public class RecordingService extends Service {
             } else if (a.equals(RECORD_BUTTON)) {
                 RecordingActivity.startActivity(this, false);
             } else if (a.equals(SHOW_ACTIVITY)) {
+                ProximityShader.closeSystemDialogs(this);
                 if (intent.getStringExtra("targetFile") == null)
                     MainActivity.startActivity(this);
                 else
diff --git a/app/src/main/res/raw-pl/about.html b/app/src/main/res/raw-pl/about.html
new file mode 100644
index 0000000..acd95e2
--- /dev/null
+++ b/app/src/main/res/raw-pl/about.html
@@ -0,0 +1,24 @@
+<html>
+<head>
+    <meta name="viewport" content="width=device-width,initial-scale=1">
+    <link rel="source" href="https://en.wikipedia.org/wiki/Binaural_beats"/>
+    <style>
+            a { white-space: pre-wrap; word-wrap:break-word; }
+    </style>
+</head>
+<body>
+<h3>O aplikacji</h3>
+<p>
+    Przyjazny dla systemu Android!
+</p>
+
+<p>Audio Recorder with custom recording folder, nice recording volume indicator, recording notification, recording lock screen activity.</p>
+
+<dl>
+    <dt><b>Licencja:</b></dt>
+    <dd>GPLv3</dd>
+    <dt><b>Kod Źródłowy:</b></dt>
+    <dd><a href="https://gitlab.com/axet/android-audio-recorder">https://gitlab.com/axet/android-audio-recorder</a></dd>
+</dl>
+</body>
+</html>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
new file mode 100644
index 0000000..4c1e787
--- /dev/null
+++ b/app/src/main/res/values-pl/strings.xml
@@ -0,0 +1,67 @@
+<resources>
+    <string name="app_name">Audio Recorder</string>
+
+    <string-array name="sample_rate_text">
+        <item>48 kHz</item>
+        <item>44.1 kHz (CD)</item>
+        <item>32 kHz</item>
+        <item>22 kHz</item>
+        <item>16 kHz (domyślnie)</item>
+        <item>11 kHz</item>
+        <item>8 kHz (telefon)</item>
+    </string-array>
+
+    <string-array name="source_text">
+        <item>Mikrofon</item>
+        <item>Bluetooth</item>
+    </string-array>
+
+    <string-array name="themes_text">
+        <item>Motyw Jasny</item>
+        <item>Motyw Ciemny</item>
+    </string-array>
+
+    <string-array name="channels_text">
+        <item>Mono (domyślnie)</item>
+        <item>Stereo</item>
+    </string-array>
+
+    <string name="hold_by_call">pauza (wstrzymane przez połączenie)</string>
+    <string name="recording_status_recording">nagrywanie</string>
+    <string name="recording_status_encoding">enkodowanie</string>
+    <string name="recording_status_pause">pauza</string>
+    <string name="recording_status_edit">edytuj</string>
+    <string name="confirm_cancel">Potwierdź anulowanie</string>
+    <string name="encoding_title">Enkodowanie...</string>
+    <string name="pause_title">Pauza...</string>
+    <string name="recording_title">Nagrywanie</string>
+    <string name="open_recording_folder">Otwórz Folder Nagrywania</string>
+    <string name="recording_list_is_empty">Lista nagrań jest pusta\n\nKliknij Nagraj, aby rozpocząć nagrywanie</string>
+    <string name="record_button">Nagrywaj</string>
+    <string name="cut_button">Wytnij</string>
+    <string name="stop_button">Stop</string>
+    <string name="cancel_button">Anuluj</string>
+    <string name="pause_button">Pauza</string>
+
+    <string name="pref_storage_title">Ścieżka Przechowywania</string>
+    <string name="pref_rate_title">Tempo Próbkowania</string>
+    <string name="pref_encoding_title">Enkodowanie</string>
+    <string name="pref_encoding_summary">Wyjściowy format pliku (.wav, .m4a, ...)</string>
+    <string name="pref_mode_title">Tryb</string>
+    <string name="pref_nameformat_title">Format Nazwy</string>
+    <string name="pref_pausecalls_title">Wstrzymaj podczas połączeń</string>
+    <string name="pref_pausecalls_summary">Zatrzymaj nagrywanie po odebraniu i kontynuuj podcas rozłączania</string>
+    <string name="pref_silence_title">Tryb Wyciszenia</string>
+    <string name="pref_silence_summary">Przełącz telefon w \'tryb ciszy\' podczas nagrywania</string>
+    <string name="pref_lockscreen_title">Sterowanie z ekranu blokady</string>
+    <string name="pref_lockscreen_summary">Pokaż elementy sterujące, gdy telefon jest zablokowany</string>
+    <string name="pref_theme_title">Motyw Aplikacji</string>
+    <string name="pref_theme_summary">Ustaw motyw aplikacji (ciemny / jasny)</string>
+    <string name="pref_application">Aplikacja</string>
+    <string name="pref_recordings">Nagrania</string>
+    <string name="pref_fly_title">Enkodowanie w Locie</string>
+    <string name="pref_fly_summary">Włączając enkodowanie w locie, wyłącza edytowanie i odzyskiwanie po awarii</string>
+    <string name="hold_by_bluetooth">pauza (bluetooth rozłaczony)</string>
+    <string name="menu_search">Szukaj</string>
+    <string name="save_as_wav">Zapisz jako WAV</string>
+</resources>