I actually could care less about ID3 tagged browsing after having this player for about a week. The sound quality and screen quality is just too great for me to not like this player just on the fact that it doesn't browse files viva ID3 tags.
Sound blew me away today when I turned on one of my favorite songs on my computer. I had to turn off my speakers and gasped in horror when I heard the sound that had come out of my speakers. I grabbed my Cowon and unplugged my speakers from my PC and plugged into my O2 and that's how I'm listening to music from now on.