[MC-23753] Game start crashing

I can start Minecraft completely normally, but the second I try to go into a world, singleplayer or multiplayer, new or old, the game crashes instantly with the notification that Java SE platform binary has stopped responding. Before it started crashing, it had been buggering up my sound for days, and I couldn't listen to anything else without it sounding like it had gone through the wash. I have a decent system that can run most MMOs on high settings without a hitch, which is why I find this especially odd. Here is the log from the launcher:
Launching in C:\Users\Lynn\AppData\Roaming\.minecraft
Running C:\Program Files\Java\jre7\bin\javaw.exe -Xmx1G -Djava.library.path=C:\Users\Lynn\AppData\Roaming\.minecraft\versions\1.6.1\1.6.1-natives-125907630829373 -cp C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Lynn\AppData\Roaming\.minecraft\versions\1.6.1\1.6.1.jar net.minecraft.client.main.Main --username Jennalele --session token:500941c7ae7f48ad83e833043e665152:a934ebf694c54fffbba07829cc5a0062 --version 1.6.1 --gameDir C:\Users\Lynn\AppData\Roaming\.minecraft --assetsDir C:\Users\Lynn\AppData\Roaming\.minecraft\assets
---- 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> 2013-07-07 16:57:18 [CLIENT] [INFO] Setting user: Jennalele
Client> 2013-07-07 16:57:18 [CLIENT] [INFO] (Session ID is token:500941c7ae7f48ad83e833043e665152:a934ebf694c54fffbba07829cc5a0062)
Client> 2013-07-07 16:57:20 [CLIENT] [INFO] LWJGL Version: 2.9.0
Client> 2013-07-07 16:57:21 [CLIENT] [INFO] Reloading ResourceManager: Default
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> 2013-07-07 16:57:36 [SERVER] [INFO] Starting integrated minecraft server version 1.6.1
Client> 2013-07-07 16:57:36 [SERVER] [INFO] Generating keypair
Client> 2013-07-07 16:57:36 [SERVER] [INFO] Converting map!
Client> 2013-07-07 16:57:36 [SERVER] [INFO] Scanning folders...
Client> 2013-07-07 16:57:36 [SERVER] [INFO] Total conversion count is 0
Client> 2013-07-07 16:57:37 [SERVER] [INFO] Preparing start region for level 0
Client> 2013-07-07 16:57:38 [SERVER] [INFO] Preparing spawn area: 4%
Client> 2013-07-07 16:57:39 [SERVER] [INFO] Preparing spawn area: 7%
Client> 2013-07-07 16:57:40 [SERVER] [INFO] Preparing spawn area: 8%
Client> 2013-07-07 16:57:41 [SERVER] [INFO] Preparing spawn area: 11%
Client> 2013-07-07 16:57:42 [SERVER] [INFO] Preparing spawn area: 15%
Client> 2013-07-07 16:57:44 [SERVER] [INFO] Preparing spawn area: 19%
Client> 2013-07-07 16:57:45 [SERVER] [INFO] Preparing spawn area: 24%
Client> 2013-07-07 16:57:46 [SERVER] [INFO] Preparing spawn area: 29%
Client> 2013-07-07 16:57:47 [SERVER] [INFO] Preparing spawn area: 35%
Client> 2013-07-07 16:57:48 [SERVER] [INFO] Preparing spawn area: 40%
Client> 2013-07-07 16:57:49 [SERVER] [INFO] Preparing spawn area: 46%
Client> 2013-07-07 16:57:50 [SERVER] [INFO] Preparing spawn area: 51%
Client> 2013-07-07 16:57:51 [SERVER] [INFO] Preparing spawn area: 56%
Client> 2013-07-07 16:57:52 [SERVER] [INFO] Preparing spawn area: 61%
Client> 2013-07-07 16:57:53 [SERVER] [INFO] Preparing spawn area: 66%
Client> 2013-07-07 16:57:54 [SERVER] [INFO] Preparing spawn area: 72%
Client> 2013-07-07 16:57:55 [SERVER] [INFO] Preparing spawn area: 77%
Client> 2013-07-07 16:57:56 [SERVER] [INFO] Preparing spawn area: 82%
Client> 2013-07-07 16:57:57 [SERVER] [INFO] Preparing spawn area: 88%
Client> 2013-07-07 16:57:58 [SERVER] [INFO] Preparing spawn area: 93%
Client> 2013-07-07 16:57:59 [SERVER] [INFO] Jennalele[/127.0.0.1:0] logged in with entity id 202 at (241.5, 64.0, 252.5)
Client> 2013-07-07 16:57:59 [SERVER] [INFO] Jennalele joined the game
Client> Setting up custom skins
Client> 2013-07-07 16:58:05 [SERVER] [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
Game ended with bad state (exit code -1073741819)
Deleting C:\Users\Lynn\AppData\Roaming\.minecraft\versions\1.6.1\1.6.1-natives-125907630829373
Couldn't delete C:\Users\Lynn\AppData\Roaming\.minecraft\versions\1.6.1\1.6.1-natives-125907630829373 - scheduling for deletion upon exit