Вот логи при запуске, звука прежнему нет.
GET: version.md5
LAUNCHER: 2.6
REPOSITORY: mclient
JAVAOPTS:

Java Path: C:/Program Files (x86)/MinecraftLauncher2/jreAMD64/bin/java.exe
Heap size: 7271.0
RP2
[INFO]: System Arch: amd64
[INFO]: Head accessories: + 131
[INFO]: Body accessories: + 8
[INFO]: Other accessories: + 8
[INFO]: Repository: mclient
Созданное окно приложения возвращает неверный HWND.
Animation thread started.
Compositor start...
[INFO]: Render mode: Off
[INFO]: Antialiasing: default
[INFO]: options.alphasort: OFF
[INFO]: Render Distance: Far
[INFO]: Language: ru_RU
WARNING: Found unknown Windows version: Windows 7
Attempting to use default windows plug-in.
Loading: net.java.games.input.DirectAndRawInputEnvironmentPlugin
Sound system start...

Starting up SoundSystem...
Initializing LWJGL OpenAL
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
Error in class 'LibraryLWJGLOpenAL'
Unable to initialize OpenAL. Probable cause: OpenAL not supported.
ERROR MESSAGE:
Could not locate OpenAL library.
STACK TRACE:
org.lwjgl.openal.AL.create(AL.java:151)
org.lwjgl.openal.AL.create(AL.java:102)
org.lwjgl.openal.AL.create(AL.java:201)
paulscode.sound.libraries.LibraryLWJGLOpenAL.init(LibraryLWJGLOpenAL.java:164)
paulscode.sound.SoundSystem.CommandNewLibrary(SoundSystem.java:1576)
paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2572)
paulscode.sound.CommandThread.run(CommandThread.java:121)
ERROR MESSAGE:
Could not locate OpenAL library.

Starting up SoundSystem...
Switching to No Sound
(Silent Mode)

[INFO]: Card name: NVIDIA Corporation
[INFO]: Card about: GeForce GTX 680/PCIe/SSE2
[INFO]: Card version: 4.5.0 NVIDIA 353.06