is big- and the Quattro is little-endian. I'm getting a "snd_pcm_hw_params_set_format: Invalid argument" response at the terminal, not in the PD message box. Anyone have any thoughts or pointers? I'll of course start to look at the source, but any past wisdom would be greatly appreciated. Best and thanks, Tad Turner <vze26m98 at optonline.net>