SurroundCast
SurroundCast is a Digital Surround HD Radio Player- with over 1000 commerical/free stations! Featuring iPod support and advanced SRS WOWXT - Circle Surround II- and Spatializer technology- Users can experience 3D Sound even with 2 speakers! SurroundCast includes AudioModeling, VST and DMO... Experience Radio like never before!
http://www.orionstudios.com/SurroundCast.exe - 16Mb - Download - Screenshot

dolby surround meter
At this software it concerns a combined level and correlation meter for Surround signals for the 5. 1-Standard. The levels of all six channels as well as the phase correlation between all combinations of two channels are represented, so that defined statements are possible for the mono... PAS-Surround Meter can be configured in a number of different ways, to accurately model the ballistics, responses and graphics of a wide range of standard peak programme meters. ... These 'irregularities' may not have any significance in the case of stereo playback, but it should be remembered that the...
http://www.pas-products.com/bin/surroundmeter.exe - 2Mb - Download - Screenshot

Maven3D Professional
Maven3D Pro is a video referenced 3D audio editor where you can record, edit and mix up to 24-bit/96 kHz pro quality 5. 1 Surround Sound. Sound effects include several true positional 3D sound effects and support for VST, DirectX, and DMO sound effect plugins. ... You can record internet radio stations, instruments, keyboards, mics, or any other kind of audio recording you want. ... 6 native effects include three 3D effects, Sound Image, Sound Field and Surround Panning, and 3 regular sound effects, Volume Amp, FIR, and Fade In/Out.
http://maven3d.com/en/downloads/Maven3D_Pro_Trial_Setup.exe - 16Mb - Download - Screenshot