Hmm I guess Ill respond to myself ;-) So I started doing some more digging. No matter how I load modules, reboot, update source code, or click my heels, I can not get a decent audio output using the cardbus interface. Unfortunatly our control room, where my pci interface resides, has been too busy to do any testing with the pci interface. So here is what I looked at last night, the /proc/asound/card0/hdsp file states that the rate is correct, 48k, and follows any settings changes made in Ardour, or Aplay. The ADAT(1-3) sync lines also seem to follow the state of the H-DSP correctly. The system also seems to be able to be a sync master or slave. So I started digging through hdsp.c, is it possible that HDSP_DoubleSpeed is getting set incorrectly? I will try some tests later and see if I can figure it out. As stated previously, I do get an output, but it sounds garbled. It is possible to make out some resemblance to the recorded audio, but it sounds like it has passed through a really bad vocoder. So thats why I am guessing it has something to do with sync speed. Any pointers for where else to look would be greatly appreciated. Im no code wizard, like most of the people on this list, but I try hard ;-) On Tue, 2002-09-17 at 07:50, D R Holsbeck wrote: -- drh(a)niptron.com Great spirits have always encountered violent opposition from mediocre minds. -- Albert Einstein They laughed at Einstein. They laughed at the Wright Brothers. But they also laughed at Bozo the Clown. -- Carl Sagan