MTP or MSC mode

Hello,
The Sansa e280 can be operated in 2 ways of USB connection modes: MSC or MTP.

In MSC mode, viewing the player as a removable disk, the "copy
and paste" or "drag and drop" method will work.
In MSC mode always through the "safely remove hardware" icon, click to remove the player's disk before taking out the USB cable.

In MTP mode, operating the player in software like Windows Media Player: under Library or Sync,
first create a playlist
next sync the playlist.
In MTP mode, follow up the warning or text in the software that gives permission when to disconnect the player.

reformat it

You can download the software from this page, the options are on the right hand side of this page.
http://www.sansa.com/support/sansa_e200/faqs

In order to get your Sansa connected, I would change from MTP to MSC and see if your PC recognizes the player then, as it should.
If you go into the settings menu and choose USB Mode and from there you can change to MSC from MTP. If you have one of those models that don't have a USB Mode option, then do the following to change to MSC:
(The model number followed by v2 on the back-bottom require this method) you have to turn it on, put the hold switch on, then hold the LEFT button |<< THEN plug it into the PC.

For the bad tracks go Under Settings, look for Mode or USB Mode. Put the unit in MSC (if that's available) or Rhapsody.

Connect it to the computer. See what driveletter it is :F: Sansa E280...G: Sansa E280... whatever it is.

Click Start/Run and type in chkdsk F:/f (or G: or whatever the letter is) . That will check and may fix the bad files.

I hope that helps
Please rate accordiingly
Thank you
Computerrep

For the bad tracks go Under Settings, look for Mode or USB Mode. Put the unit in MSC (if that's available) or Rhapsody.

Connect it to the computer. See what driveletter it is :F: Sansa E280...G: Sansa E280... whatever it is.

Click Start/Run and type in chkdsk F:/f (or G: or whatever the letter is) . That will check and may fix the bad files.

I hope that helps
Please rate accordiingly
Thank you
Computerrep

What I would recommend you to do is to format your device...
Formatting the player erases all files in the player, and oftentimes this is the best option to ensure that all files are removed and any corruption eliminated. Also, it is best to format the player when in MSC mode.
2. When the appears as a drive letter (under MSC mode), right-click on that drive letter and select "Format". On the "Format" pop-up window, click "Start" to begin the format process.
3. Follow the on-screen prompts and safely remove the player from your PC when the "Format Complete" display appears.
4. Unplug the player from the PC and when the player is powered up, the message "No Files" should appear on the player's LCD screen
5. Switch the mode back to "MTP", or continue to use "MSC". Note: It is best to use "MTP" when you are transferring subscription music to the player
Then I would recommend you to get the latest firmware upgrade for your device..To get the latest firmware upgrade follow this link...

http://sandisk.com/Retail/Default.aspx?CatID=1376

Thank you
Computerrep

P.S. Please rate accordingly...

There is a problem with the device firmware itself..you can try to reset the player by holding the power button down for 15-20 seconds or until it resets....the latest firmware for the e280 resolved much of the freezing issues....also there are two modes for you to use the e280 the msc and mtp.....try deleting in mtp mode....if that doenst solve it...just go to the sandisk site to get a firmware upgrade done...and that would solve the proplems..

format the player in MSC/Rhapsody mode. Then restransfer the songs back to the player.This is usuall cause by a bad file in the player, If you are unable to get to the menus of the player. Perform recovery mode on the player and create a sansa.fmt on the player then let if format the device.

I had this same problem with my Sansa e280, I did some research and found that MTP mode is used when syncing with Windows Media Player.  So if you plugged in your player under MTP and simply tried to drag and drop using Windows Explorer the player won't recognize.  I have heard that you should be able to view them on the Sync tab in WMP but I personally have not tried.  

The way I got rid of the songs was by going into my Sansa Settings and changing the USB mode to MSC, opening the Player by going to My Computer, then (if using Windows XP) click on Tools > Folder Options.  Click on the View tab and Select "Show Hidden Files and Folders".  Click "OK" Then Right click on the MUSIC Folder and Select "Properties"  Uncheck "Read Only" and "Hidden".  Unplug your Player and it will restart.  Viola, no more ghosted songs.

Have you tried updating the firmware. Even if it is the lastest edition, download the firmware manually and run the software. Then format in Windows Media player. Best Regards Keith