Every time I play the sound will randomly just stop working all together until I completely exit out of the client/launcher.

Here is my client log:

Launcher 0.8.1 (Dev) (through bootstrap 2) started on windows...
System.getProperty('os.name') == 'Windows 8'
System.getProperty('os.version') == '6.2'
System.getProperty('os.arch') == 'amd64'
System.getProperty('java.version') == '1.7.0_21'
System.getProperty('java.vendor') == 'Oracle Corporation'
Loaded 1 profile(s); selected '(Default)'
Delta time to compare resources: 320 ms
Download job 'Resources' skipped as there are no files to download
Job 'Resources' finished successfully
Trying to log in...
Logged in successfully
Getting syncinfo for selected version
Queueing library & version downloads
Download job 'Version & Libraries' started (8 threads, 19 files)
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.4\jopt-simple-4.4.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Job 'Version & Libraries' finished successfully
Launching game
Unpacking natives to C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a-natives-5648937974175
Launching in C:\Users\xxx\AppData\Roaming\.minecraft
Running: "C:\Program Files\Java\jre7\bin\javaw.exe" -Xmx1G -Djava.library.path=C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a-natives-5648937974175 -cp C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.4\jopt-simple-4.4.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\xxx\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a.jar net.minecraft.client.main.Main --username Geehard --session 7292641584803136104 --workDir C:\Users\xxx\AppData\Roaming\.minecraft
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- (We'll do this automatically later ;D) ----
Client> 265 recipes
Client> 27 achievements
Client> 2013-05-26 19:40:48 [CLIENT] [INFO] Setting user: Geehard
Client> 2013-05-26 19:40:48 [CLIENT] [INFO] (Session ID is 7292641584803136104)
Client> 2013-05-26 19:40:48 [CLIENT] [INFO] LWJGL Version: 2.9.0
Client>
Client> Starting up SoundSystem...
Client> Initializing LWJGL OpenAL
Client> (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
Client> OpenAL initialized.
Client>
Client> 2013-05-26 19:40:54 [CLIENT] [INFO] Connecting to 103.23.148.113, 25720
Client> Setting up custom skins
Client> 2013-05-26 19:40:56 [CLIENT] [INFO] [CHAT] [Server] <> Welcome Geehard! Please respect other players & their property. Enjoy your stay in Neckcraft!
Client> Error in class 'CodecJOrbis'
Client> Unable to acquire inputstream in method 'initialize'.
Client> ERROR MESSAGE:
Client> minecraft:sound/piano2.ogg
Client> STACK TRACE:
Client> bhp.a(SourceFile:37)
Client> bhx.a(SourceFile:34)
Client> bhx.a(SourceFile:27)
Client> biz.getInputStream(SourceFile:65)
Client> paulscode.sound.codecs.CodecJOrbis.initialize(CodecJOrbis.java:281)
Client> paulscode.sound.libraries.SourceLWJGLOpenAL.play(SourceLWJGLOpenAL.java:616)
Client> paulscode.sound.Library.play(Library.java:706)
Client> paulscode.sound.libraries.LibraryLWJGLOpenAL.quickPlay(LibraryLWJGLOpenAL.java:795)
Client> paulscode.sound.SoundSystem.CommandQuickPlay(SoundSystem.java:1866)
Client> paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2438)
Client> paulscode.sound.CommandThread.run(CommandThread.java:121)
Client> Error in class 'SourceLWJGL OpenAL'
Client> Audio Format null in method 'play'
Client> Exception in thread "Thread-6" java.lang.NullPointerException
Client> at com.jcraft.jorbis.Block.<init>(Block.java:55)
Client> at paulscode.sound.codecs.CodecJOrbis.initialize(CodecJOrbis.java:252)
Client> at paulscode.sound.libraries.SourceLWJGLOpenAL.play(SourceLWJGLOpenAL.java:616)
Client> at paulscode.sound.Library.play(Library.java:706)
Client> at paulscode.sound.Library.play(Library.java:675)
Client> at paulscode.sound.SoundSystem.CommandPlay(SoundSystem.java:2076)
Client> at paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2599)
Client> at paulscode.sound.CommandThread.run(CommandThread.java:121)
Client> 2013-05-26 19:52:35 [CLIENT] [SEVERE] Reached end of stream for /103.23.148.113
Client> 2013-05-26 19:52:35 [CLIENT] [INFO] Stopping!
Client>
Client> SoundSystem shutting down...
Client> Error in class 'SoundSystem'
Client> Command thread did not die!
Client> Ignoring errors... continuing clean-up.
Client> Error in class 'SoundSystem'
Client> Problem during Library.cleanup()!
Client> Ignoring errors... continuing clean-up.
Client> Author: Paul Lamb, www.paulscode.com
Client>
Client> AL lib: (EE) alc_cleanup: 1 device not closed
Game ended with no troubles detected (exit code 0)
Deleting C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a-natives-5648937974175
Couldn't delete C:\Users\xxx\AppData\Roaming\.minecraft\versions\13w21a\13w21a-natives-5648937974175 - scheduling for deletion upon exit