just prior to this problem appearing?
So I've been playing geektool around these days, the audio works fine before. Well it seems like today,the problem is I can hear the system sound like turning up the volume. But whenever I watch a youtube video there is no sound,when i play iTunes the song meter will just stuck there and no song will be playing. Every time i reboot my computer the sound will be back, than after awhile the sound won't come out again.