Its tagging is its weakest feature.
To me its strongest points are it's small size, uses wasapi, simplicity and it doesn't need to be installed. I have a little 8Gb thumb drive on my keyring and can play music from anywhere there's a computer (nowadays that's everywhere). I can plug it into a computer at work that won't let you install anything or stick it into the usb port of a friend's computer and listen to music instantly, either from files or the internet including streaming radio. It's kinda cool to go over to someone's house and be able to show them what flac is all about, let them hear your latest tunes or start a party. Kinda like a Corvette. Not the most practical as your only car, but awesome if you already have something to get back and forth to work (library management).
