Sanza m250 mp3

reset the device to factory defaults thats it....
check your usb ports are working properly in not i recommend to re instal the usb device drivers also

This is hard to explain but you do have files on your player.. It is like having 2 players in one, or 2 different memories, check out this tip posted here...Solve your MP3 Player Connection Problem.

Try this solution:

Hook up your mp3 player to your computer
Go to your desktop and double left click on "My Computer"
When it opens you will see listing that says "Devices with Removal Storage" your mp3 player should be listed there.
Right click on your mp3 player, and a window will open, right click on "Open" and now your files/songs should be visible.
Hold the left click down and drag it across all the files/songs that you do not want this will highlight the files/songs you do not want, release, right click and then click on "Delete"
Now you mp3 player should be clear of the files/songs you do not want.
Good Luck,
I hope this helps

Try reflashing the firmware for your device you can find the latest firmware and flashing utilities from the SanDisk website. Make sure that you back your music up first because when you do this you are setting it back to factory settings.

hello :
follow me --->>

Spoken Word
Browse the Audible audio book file in alphabetical order. Press the Play/Pause/Up Button or Repeat/AB/Down Button to browse through the audible audio files. Press the Select Button to browse the songs for the selected file.

This player has an MSD/C vs and MTP option - in one mode, you will only see the audible, config, etc- in the other mode, you will be able to see the music files, but not record - very annoying

This player will only recognize Audible audiobook files

There is not a fix for the pause/resume issue - it is a major problem for just about every mp3 player that claims audiobook compatibility

Here are some help files:
Audible
1) Adding audible books to your MP3 player using Audible Manager (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-add-book.wmv
2) Adding books from an online library to your computer using Audible Manager (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-add-books-from-online-library.wmv
3) Adding your MP3 player as a mobile device in Audible Manager (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-add-mobile-device.wmv
4) Deleting an audible book in your MP3 player using Audible Manager (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-delete-book.wmv
5) Deleting a book from your library using Audible Manager (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-delete-book-library.wmv
6) Purchasing an audible book from Audible.com (Windows XP)
Windows - http://mp3support.sandisk.com/audible/xp-audible-purchase-book.wmv

This may or may not help you, but I've connected my Sansa m250 to two computers. One has Windows XP and the other has Windows 2000. And neither can see the other's files. The file structure you describe sounds like what I see on the Windows 2000. For some reason it shows it as a disk - the same as a memory stick. It can't see what was drag and dropped or loaded by Windows Media Player. So I would make sure I used the same computer that was to used to transfer the files.

click audible there is where your songs are it happenes from time to time. ~Grim

Those are folders that come with the MP3. Create a new folder and start moving music into it.