Alsa makes noise when foreground job is changing

[song kisun]

Hello.
I had been rebuild my system, recently. After re-installing I found some weird situation. Audacious or Mplayer makes noise when foreground job is changing. (It means, when I open some file, click task bar panel, change browser tab, etc.)

If I don't do anything except playing music, there isn't any significant problem.

When noise is come out, repairing is very simple. Click stop button in a audacious panel, and then click play button again, It works fine.

But It's so uncomfortable, sometimes it makes me hard.

my kernel version is 2.6.22-r8, my sound card is OptoPlay(usb-audio).
I compiled alsa as a module, as a gentoo document suggested. (usb-audio is working as a module)

alsa-lib version is alsa-lib-1.0.13 ( I downgraded, because 1.0.15 and 1.0.14-any don't work for me. If I use 1.0.15 or 1.0.14 any music player makes crash(Segmentation Fault error) . so I added a sentence in /usr/portage/profiles/package.mask)


So, what should I gonna do?

Thanks for reading.

[mark_alec]

Moved from Kernel & Hardware to Duplicate Threads.

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