Minecraft Sound in 1.8.8 PC - WINDOWS

I´m playing minecraft in my realms and the sound desappears. I marked the option in the launcher "Keep Launcher Open" and in the log appears this:

"AL lib: (EE) MMDevApiProc: WaitForSingleObjectEx error: 0x102" too much times, i dont have idea was is provocating this. Please help me or fix it!