If you want to move forward faster, use Shift arrow-up. You should hear the rhythm of the pillars move closer, and next you will move in between the two rows of pillars. If nothing seems to change in the soundscapes, chances are that you need to tab the focus of your browser to the VRML view, because even if your browser has focus, focus within the browser may be at some browser control other than the VRML scene. An easy way to move to a number of predefined viewpoints is to press the page down key a number of times. This will give you a useful overview of the kinds of soundscapes and objects that you will likely encounter when navigating around by yourself.
Blind users are welcome to report about their experiences on the seeingwithsound user group.
3.31 blocks the existing arrow key navigation functions of Cosmo Player. As a very crude workaround, you should at this point quit Jaws and Alt Tab your browser back into focus, if necessary also using Tab to bring focus within the browser back to the VRML scene. The problem has been reported to Henter-Joyce. Window-Eyes shows none of these problems. Once all of this works as described, you can start navigating around the VRML scene, using the arrow keys on your keyboard for full interactivity.