Windows 7 SB Live! 5.1 - Analog connection echo's

[THRobinson]

Well, finally got the card to work in analog stereo only, not digtal 5.1

(original thread)
http://windows7forums.com/windows-7-hardware/5967-sound-issues-2-different-cards.html

Now, I have an echo. Assuming the reverb is set too high, but can not find anything allowing me to adjust reverb. Bass, treble, balance... no reverb.

Any ideas?