I bought WavePad some time ago, but I have forgotten why. It is quite some while since I last had it installed.
The end of the wikipedia page seems somewhat negative about other software that gets installed.
The company is based in Australia, which means that Australians buying the software have to pay the 10% GST. I have bought other software via the internet in Australia and never paid GST that I recall.
I have used a few of their conversion products with good success...the additional software is from their suite and downloads with whatever initial software you download, but doesn't activate until needed. I haven't noticed any adware or malware from any of their products. With the plethora of new sports cameras and small handicams with different proprietary formats, these converters work great for converting them into formats that Vegas can use without a lot of jumping through hoops. Within the suite of software products, there are audio converters and document converters that work the same way and are time savers when dealing with cross platform files. I have been running their stuff on my XP machine to keep my Win7 machine lean, but don't think it makes much difference as the software seems to have a somewhat lean footprint on the hard drive.