Windows analyser software

Somewhere on here within the last month or so someone posted a link to a free windows program that captures data using audio port on PC and displays it like you would get from a logic analyser. I keep searching but not having any luck finding it again. Can someone post the link again please.
The idea is to see if it's possible to use the graphics engine from it to display results from a simple arduino logic sniffer that logs transition time & direction on a data pin. Several people on here try to decode RF, IR & serial data and I think it would be good to have a software tool (like ArduinoISP is a useful tool) to capture and display results on the forum from people who are having problems.

This one? http://audacity.sourceforge.net/

PaulS:
This one? http://audacity.sourceforge.net/

Alas not, it was not audio software though I think it captured data using the mic/line input.