I was having similar problems, if you are using fedora check the last thread in this link.<br><br><a href="http://www.gossamer-threads.com/lists/mythtv/users/219768?search_string=Re%3A%20Need%20help%20with%20Analog%20spdif%20and%20IEC958%20using%20ALSA%20%20;#219768">
http://www.gossamer-threads.com/lists/mythtv/users/219768?search_string=Re%3A%20Need%20help%20with%20Analog%20spdif%20and%20IEC958%20using%20ALSA%20%20;#219768</a><br><br>-Gregg<br>