No sound in OpenAL

English Hardware
1

I have no sound in OpenAL applications. For example in Regnum Online, Zero Ballistics, OpenRA, Osmos Demo and others. Openal-soft library is installed. Osmos Demo returns the following error:

Initializing SoundSystem…
Initializing OpenAL
Getting OpenAL device list
Found 3 devices:
Device 0: PulseAudio Software (3: OPENAL DEFAULT)
Device 1: ALSA Software
Device 2: OSS Software (2: OSMOS DEFAULT)
Pass 1: no valid device was specified (-1)
Pass 2: attempting device 2: “OSS Software”…
Failed to open device
Pass 3: attempting device 0: “PulseAudio Software”…
Creating OpenAL context
Opened device “PulseAudio Software”

But still no sound. Previously there was geood sound in all those applications. What should I do to have the sound again?

2

Zero Ballistics says:

open /dev/[sound/]dsp: Device or resource busy
ERROR : Sound OpenAL Context: ALC_INVALID_DEVICE
context: after initializing devices
ERROR : OpenAL was not able to find any sound device on this computer!!
Warning : There are less than 8 sound sources available! Available sources: 0
SoundManager::SoundManager ->
Unable to create any OpenAL Sound Source!!
0h0m14.4546 Closing log.