For those asking if I need to carry around all of my music, the answer is no, but the answer to do I need to carry around any of my music is the same. For me, it's very frustrating because the technology clearly exists, so I'm not sure why we have these artificial stops preventing us from doing it. I mean, it seems kinda strange to me that the FiiO X5 will support 512GB of storage but then have a limit on the number of files that it can hold that isn't directly related to that same storage capacity. Keep in mind this conversation isn't even considering the fact that I'd like to keep everything lossless..
I've been searching for this great mythical unicorn of a player for the better part of a decade (I started life with a 60GB Creative Zen Xtra and upgraded it to127GB long after it was passé to not have an iPod). Currently I'm running an iPod with a 240GB drive and Rockbox, but haven't been terribly impressed with its stability. Really I just want the perfect device for my needs and the FiiO is coming so close, but missing by just the smallest, but hugely frustrating margin. I'll still buy the device because I think it's still going to be the best option even if I have to browse folders, but it seems like this would be something easily fixed that wouldn't have much of an impact on the final cost or design. I wouldn't have any problem paying $100+ extra for this either. Ultimately I hope this is something FiiO will consider.
As for the logic of having less music on your player somehow enabling you to listen to more music, that seems slightly flawed to me. I'd much prefer to have everything there for when the mood strikes me. Not to mention, I can put it on shuffle and not hear the same song twice in 3 months.