diff --git a/app/build.gradle b/app/build.gradle
index cb3ccdb3a..9c488b779 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "org.literacyapp.calculator"
         minSdkVersion 21
         targetSdkVersion 23
-        versionCode 1000006
-        versionName "1.0.6"
+        versionCode 1000007
+        versionName "1.0.7"
         setProperty("archivesBaseName", "$applicationId-$versionCode")
     }
 
diff --git a/app/src/main/res/raw/digit_0.wav b/app/src/main/res/raw/digit_0.wav
index 91d2e6e51..ea235403c 100644
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diff --git a/app/src/main/res/raw/digit_1.wav b/app/src/main/res/raw/digit_1.wav
index 47c9db7e5..992e384e5 100644
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diff --git a/app/src/main/res/raw/digit_2.wav b/app/src/main/res/raw/digit_2.wav
index 8c962aa7a..dbc32d0ab 100644
Binary files a/app/src/main/res/raw/digit_2.wav and b/app/src/main/res/raw/digit_2.wav differ
diff --git a/app/src/main/res/raw/digit_3.wav b/app/src/main/res/raw/digit_3.wav
index 2a138578c..293295772 100644
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diff --git a/app/src/main/res/raw/digit_4.wav b/app/src/main/res/raw/digit_4.wav
index f86938191..d6985662d 100644
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diff --git a/app/src/main/res/raw/digit_5.wav b/app/src/main/res/raw/digit_5.wav
index a231e7eea..54586ec86 100644
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diff --git a/app/src/main/res/raw/digit_6.wav b/app/src/main/res/raw/digit_6.wav
index f48f45afd..cb598bb2e 100644
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diff --git a/app/src/main/res/raw/digit_7.wav b/app/src/main/res/raw/digit_7.wav
index 0ab380cb7..af1f89423 100644
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diff --git a/app/src/main/res/raw/digit_8.wav b/app/src/main/res/raw/digit_8.wav
index 896855dcd..66a2ed710 100644
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diff --git a/app/src/main/res/raw/digit_9.wav b/app/src/main/res/raw/digit_9.wav
index 438e69919..39d5ae9b8 100644
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diff --git a/app/src/main/res/raw/equals.wav b/app/src/main/res/raw/equals.wav
index d60c599b9..098f8d39c 100644
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diff --git a/app/src/main/res/raw/minus.wav b/app/src/main/res/raw/minus.wav
index 40e004b4c..4b4e93ca9 100644
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diff --git a/app/src/main/res/raw/mul.wav b/app/src/main/res/raw/mul.wav
index 1658c2f0b..e94831b5c 100644
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diff --git a/app/src/main/res/raw/plus.wav b/app/src/main/res/raw/plus.wav
index 0a880dd43..cd0701afc 100644
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