On Sat, May 22, 2010 at 10:22 PM, Sean McNamara <smcnam at gmail.com> wrote: > The reason your PulseAudio apps don't work while snd-pcm-oss is > playing audio is because ALSA, at the low level, can only play sound > from one app at a time. For clarification, below the alsa-lib level, the ability to play simultaneous PCM streams is hardware-dependent. Certain controllers can do so, e.g., EMU10k1, CS46XX, limited number of HDA. Best, -Dan