I'd like to get some feedbacks on the difference between the stereo track, listened with a Dolby Pro Logic hardware decoder, and the other encoded tracks, obtained in different manners - 4 are upmixed using Foobar2000 and different plugins, 1 is captured from L, C, R, S outputs of a Pro Logic decoder, then surround is "steroized" using Audacity Pseudo-Stereo plugin, then an LFE is obtained with a low pass of the previous 5 channels, where those are then high passed.
So, a listening test with your setup will be greatly appreciated!
Back to Womble: AFAIK, no software could exactly decode (better, process) a Dolby Surround encoded stereo track, at least not so well as hardware decoder, in particular vintage ones, but this will lead to an entirely new discussion... (^^,) - that I will be happy to partecipate, but with not enough knowledge to start!
EDIT: ...but if you would like to do a conversion using Wooble and the original stereo track, I'm curious to see if the result is similar to the one I reached using hardware!