Full user review
Very slow, expects you to know what is a compatible conversion versus what isn't, nagware, malware
From a download homepage swimming in dodgy ads and an obscured download link that increases the chance you click on one of those, to one opt-out toolbar install plus a secret no opt-out toolbar install, to always requiring Admin privileges to run, to loading advertisements while the software is running in hidden windows, to nagware to make sure you run the latest version, this software is probably the worst thing I've ever used.
It's a closed source fragile clockwork GUI for smashing together dissimilar Free Software products. Sometimes it works, sometimes it won't, sometimes you'll have to force close it. But the malware payloads, of course, always work. I can't recommend against using this software enough.