Hopper: java.lang.NoClassDefFoundError: paulscode/sound/codecs/CodecJOrbis

java.lang.NoClassDefFoundError: paulscode/sound/codecs/CodecJOrbis
	at bsw.<init>(SourceFile:67)
	at btc.<init>(SourceFile:63)
	at azd.Z(SourceFile:396)

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 10/25/13 11:22 PM
Description: Initializing game

java.lang.NoClassDefFoundError: paulscode/sound/codecs/CodecJOrbis
	at bsw.<init>(SourceFile:67)
	at btc.<init>(SourceFile:63)
	at azd.Z(SourceFile:396)
	at azd.e(SourceFile:689)
	at net.minecraft.client.main.Main.main(SourceFile:103)
Caused by: java.lang.ClassNotFoundException: paulscode.sound.codecs.CodecJOrbis
	at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
	... 5 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at bsw.<init>(SourceFile:67)
	at btc.<init>(SourceFile:63)
	at azd.Z(SourceFile:396)

-- Initialization --
Details:
Stacktrace:
	at azd.e(SourceFile:689)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Linux (amd64) version 3.11.0-12-generic
	Java Version: 1.6.0_27, Sun Microsystems Inc.
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 91641320 bytes (87 MB) / 120717312 bytes (115 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.7.2
	LWJGL: 2.9.0
	OpenGL: Mesa DRI Intel(R) Ivybridge Mobile  GL version 3.0 Mesa 9.2.1, Intel Open Source Technology Center
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
	Anisotropic Filtering: Off (1)