Cannot add new music or access previously loaded music

1. First, check your device setting up on MTP or MSC? Turn on device, go to "settings" , press down or up to find "USB Mode", you can see the check mark at MTP (auto detect) or MSC mode. Change to another usb mode.
2. You have 2 ways to delete songs:
2.1. Delete songs by device: play songs, press down (sub menu) until you meet "delete song", select it and yes
If you delete all items in device: Settings, Format, and yes
2.2. Delete songs by computer: plug device to computer, double click on device icon, Music folder, and delete songs you want. If you don't see songs in there, unplug the device from pc, and then change USB mode, and plug device to pc to delete.
Good luck

Go to my computer scroll to sansa or your MP3 player and open the music folder and open each sub folder and delete Songs manually then delete the folders them selfs then format

Try and drag and drop from your music folder to the media folder on the player make sure usb mode is msc this will show you all the folders Use your windows explorer for the transfer... much easier...If you don't have copies of your music copy to a folder on the computer first
Make sure you have it in MSC usb mode
Download and install run connect sansa when asked. Link
(http://mp3support.sandisk.com/sansa/Installer/1082/SansaUpdaterInstall.exe)
This has the manual also

Either:
1)The licenses on the songs expired, which means you will have to update them through the music service that you acquired them from. (Not likely since the ripped songs are doing the same thing - although you could have inadvertently checked the option in Windows Media Player to add a DRM license to them).
Or:
2) Switch the USB Mode in the Settings menu of your Sansa clip to Auto-Detect or MTP.

Good luck!

-Tha Mp3 Doctor

1 Check to see that the player is in MSC mode by going to the USB mode section in the Settings menu.

Step2 Plug the SanDisk Sansa MP3 player into your computer.

Step3 Click on the Start menu.

Step4 Click on My Computer.

Step5 You will now see a drive for the device and one for the SD card.

Step6 Double click on the Sansa device.

Step7 Go to the My Music folder or the location of your music files.

Step8 Choose songs from your folder and drag and drop them to your Sansa device.

I hope that helps..
Please rate accordingly
Thank you
Computerrep

I had this same problem. What I ended up doing was going into My Computer into the device itself and seeing what showed up. It appears a few new songs I popped on there the day after were appearing but nothing else. I deleted all the files, unplugged it from the computer and let the library update, old songs were still playing. Plugged it back into the machine and voila they showed up.

To delete songs from your device follow the steps below
You have to make sure that the device is on MSC mode...then make sure your device is plug in to the computer..Then go to programs - accesories - windows explorer, find the SanDisk in my computer, go to media, music and delete them from there.
Either under sync panel in your windows media player it will show your music when it's connected. just click the plus signs for what song you need to get rid of, right click and click delete.
To format it..on your device..go under..menu, setting and there should be a format option option there..let me know if that doenst work for you...
Hope this helps

P.S.Please rate accordingly...
Thank You
Computerrep

The instructions with pictures are on pp. 13-19 of the user's manual:
Loading Music
You can transfer music from your computer to the Sansa player using the dragand-
drop method or using music managing software like Windows Media Player.
Drag and Drop
Follow these steps to drag-and-drop music to your Sansa e200 player:
1. Connect your Sansa e200 player to your computer.
2. Select Open device to view files using Windows Explorer on
initial connection.
3. Double-click on Sansa device.
4. Double-click on the MUSIC folder.
5. Drag and drop music files from your computer to My
Computer\Sansa e200\...\MUSIC.
Windows Media Player
Before you can create playlist and transfer (or synchronize) them to your
Sansa player, you need to show Windows Media Player where your songs are
located.
Adding Music Files to Library…
1. To add music files to WMP 11’s library, please follow these steps:
2. Click the arrow below the Library tab.
Loading Content 14
3. Make sure Music is selected then click Add to Library…
4. In the Add to Library dialog box, click one of the following options
then click OK.
- My personal folders:
Use this option to monitor the digital media files stored in your
personal Music, Pictures, and Videos folders, as well as any files
stored in the public Music, Pictures, and Video folders that everyone
who uses your computer has access to.
- My folders and those of others that I can access:
Use this option to monitor the digital media files stored in your
personal Music, Pictures, and Videos folders, the files stored in the
public Music, Pictures, and Video folders, as well as the files stored
Loading Content 15
in the personal Music, Pictures, and Videos folders that belong to
other users on your computer.

the best way for that is to read your manual.

MINIMUM SYSTEM REQUIREMENTS
Windows XP SP1
Windows Media Player 10
Intel Pentium class PC or higher
CD-ROM drive
USB 2.0 port required for hi-speed transfer
CONNECTING AND TRANSFERRING
Connect to your Computer
1. Connect the small USB Cable Connector to the USB port on your computer, and then plug the larger
Cable Dock Connector in to your Sansa c200 port.
2. Once connected to computer, it should be detected by the operating system automatically and is
shown as an additional drive called “Sansa c200”.
SANSA MEDIA CONVERTER
You will need to use Sansa Media Converter to transfer photos to your Sansa c200. Insert your SanDisk
CD and select Sansa Media Converter to install it to your PC. Then you can load your personal photos
onto your Sansa c200 by using Sansa Media Converter.

TRANSFER MUSIC
To transfer music to your Sansa c200:
1. Connect Sansa c200 to the computer.
2. Drag and drop files from your computer to Sansa c200 by using a variety of music software
programs to transfer/synchronize your files.
3. In MTP mode as long as the files are WMA or MP3, they can be dragged into the Media folder.
Otherwise, they can be dragged into the Data folder (these files will not appear on the player).
4. In MSC mode, files/folders can be dragged/copied to the device.

The only way I know to delete music files or voice or FM recordings, is straight from the User's manual on the CD: 1. Set the e250 to MSC mode. 2. Plug it in to your computer with the USB connector. 3. Open the Sansa e250 drive in My Computer and browse to the MUSIC folder (or RECORD folder)and delete the files there. (That's where you also add music files, by dragging from other explorer windows.) To delete (or add) photo and video files, you have to use the Media Converter, which you install from the disk that came with the e250.

Hi, This is taken from another post, but might work for you as well: 1. Take the battery out of the Sansa player. 2. While the battery is out, plug the Sansa m200 player into another USB port, preferably a rear one or a self powered USB hub, on the computer. 4. If the screen reads ?USB Connected? when the Sansa player is plugged in with no battery, unplug the Sansa player. 5. Hold the "Menu Button" (Power Button) for 45 seconds. 6. Connect it to the computer again (still without the battery). 7. If the screen once again reads ?USB Connected,? disconnect the player and insert a new battery which has never been previously used. 8. Try powering on the player. If the above procedures (power cycle) didn't work, please repeat the process again but now hold the power button for 2 minutes and wait for at least 5 minutes before plugging in new set of batteries.