I'm currently reuploading Super Hero Taisen, so if you've had audio problems, a version 2 is coming out. Till then, savvy forum user Venares has written a bat program to convert the surround sound track to stereo, which should help with the compatibility.
By the way, why do you think Toei movies are as bad as they are? Contribute to this thread!
And if you haven't noticed, http://wiki.tvnihon.com/ is the new url for our wiki. There's no excuse to forget it now!
Thread / Wiki