Yes when folder browsing it shows no .flac files whatsoever. Including the same files it originally accepted when I first got the player. However after looking at other peoples solutions i found renaming the files from .flac to .fla does seem to work. However like I mentioned earlier All of my albums are ripped to flac format. So I have 1000s of songs and I don't wish to rename every one of them. Not exactly what Cowon advertises. Anyway what I've been wanting to know is why something that worked flawlessly when first purchased suddenly doesn't accept reimporting of the same file type i.e. flac.
I have contacted Cowon dealer several times but all they do is ask for info I already gave them. Like "when did I discover this issue?" And that would be when I wanted to add new songs to the player.
But as I stated even the files that were originally transferred and working perfectly when I first used the J3 they no longer register even when going through Folders>J3>Music. =(