Its still playing up...for instance....now it has copied onto the SD card the artist name (click on this) I get the album details (click on this its says "This folder is empty). With this example I have four albums under the artist.....3 of the albums are showin all the track details......one of them has nothing. Whe I try and recopy the track details across I get the message "There is already a file with the same name in this location" with the option to copy and replace etc. BUT I CANT SEE THE TRACK DETAILS!!
These are MPEG-4 files by the way.
EDIT / UPDATE:
Started again and just copied a file across all details showed up for the Artist / Album and tracks. Downloaded a second album and suvvessfully saw the same. Went back into the first artist and rather than seeing the album name saw the message "No files Exist".....recopy the file and I get the message "this folder already contains a file with the same name".....ArGGGHHHHHHHHH!!!! this is just ridiculous!
I'm just jumping in but read the past couple pages regarding this. You are saying that you put a microsd card into a card reader into a computer, copy and paste your music collection onto it, eject it (make sure you are safely ejecting it), putting it in the dx50, letting it scan. It is then discovered that it doesn't scan everything, you put it back in the computer and notice things have visibly vanished from the folders? And then you attempt to copy files over again and it says it's already there.
Does the DX50 not show you all the files and folders on the sd card when you browse by directory structure? A lot of the discussion seems to have the terms album / track info not showing up which would not be relevant to an issue of files not showing up at all. Whereas if files show up and the track info is not present it would be different. I do know that Windows tends to not display any tag information about music files when they're stored on a SD card, however the same tracks when on an actual hard drive will result in showing track information in windows explorer. That doesn't mean anything though.
And whether or not the albums appear under albums on the dx50 is also not of interest as that is tag related, but what does the dx50 say is on the sd card in the directory view? Don't even perform a scan, that is not necessary. However from all these scans you've been doing make sure you wipe out the data on the internal memory of the DX50. Alternatively, try to copy music to the sd card with it plugged into the dx50 via the usb cable (it will take much longer but is more or less like copying to an iPod).
Whatever the case, it doesn't sound like the dx50 would be doing anything that would make files become invisible but remain on the sd card as far as Windows is concerned. Doesn't sound like something wrong with the sd card either, or sd card reader. Might even be something we've all been trying to over complicate in our troubleshooting. I am a windows engineer and don't recall seeing anything like what it sounds like you are seeing. Would be interesting if you were to record some snippets with your phone or something, some video showing what you're doing and what is happening, put it on youtube, let us experience your pain first hand. :)
The issue sounds annoying, annoying enough to where I wouldn't really feel satisfied if you just returned it but rather I'd want to know what is going on.