Erase all songs on my sansa e250R mp3

The issue you have described with your portable device in most cases can be resolved by formatting your device. Please follow these steps even if you have already attempted them once before.





Please note that this will remove all music from your device.





Formatting the device in Windows Media Player





1. Open Windows Media Player with your MP3 player connected to the computer





2. At the top of windows Media Player select the Sync tab at the top





3. The MP3 player should be recognized on the right hand side and say "Your Player Name"





4. Above the player name is a button that says "Format Storage Media" click this button to erase all the data from the player

Download the Sansa Recovery Tool from the Sansa website.
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out: http://www.sandisk.com/Retail/DriverDownloads.aspx
-Tha Mp3 Doctor

Get software from Sandisk's website

These are the most common methods for recovering Sandisk's Sansa Mp3 Players. I have been almost universally successful in recovering Sansa players using one or a combination of these methods. These methods do not work if you are having synchronization or music format issues - they are for recovering a player that will not power up, freezes, flashes, is not recognized by the computer, and a host of other issues.

Reset the Sansa Player first. On most models, restart is done by holding the power button in for 15 seconds or longer. Check your specific manual to be sure. The manuals are available from the Sansa website if they have been misplaced.
Download the Sansa Recovery Tool from the Sansa website.
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out: http://www.sandisk.com/DriverDownload/driverList.asp
If these fail, then:
Try this: disconnect the player from the computer, turn it off, hold in the volume + button, and reconnect the player to the computer while holding the volume + button in. Keep holding the volume + button for an additional 5-50 seconds. Windows should eventually go into recovery mode and revive the player- it will pop up a window that says Found New Hardware Wizard.
If you get the problem where MTP Device keeps popping up continuously, uninstall the “MTP Device” by going to Start à Control Panel àSystem à Hardware à Device Manager (you computer may vary slightly, depending on Windows Version).
You may have to restart your computer after each of these methods to get them to work properly. Disconnect your Sansa player BEFORE shutting down your computer.
-Tha Mp3 Doctor

Some DRM-encrypted files have a fixed time limit for how long you can use/play a song. after the time period has lapsed, they will show up as "Error - File Format..." (this is only one possibility)

Go ahead and do this, in case the DB is corrupted:
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out: http://www.sandisk.com/Retail/DriverDownloads.aspx

-Tha Mp3 Doctor

Ok
the easiest way is:

Open My Computer and go to your sansa folder named something like this "SansaE250"
Open it and go into music and delete all the songs
simply, press CTRL+ A - selecting everything, then press Delete.

If you originally used rhapsody (or began in Rhapsody mode) , you have to use rhapsody to remove the songs. If that doesn't work, you can manually open the music folder by enabling "hidden folders" under "tools" -> "folder options..." -> click the "view" tab -> scroll and check "show hidden files and folders". Then go to My Computer -> Sansa e250 -> "system" -> "music" -> then delete the songs. I don't know the effects of using this method, so use it at your own risk.

Btw, Real Player should do fine as well.

try to remove the battery, wait 30 seconds and replace it
this should reset your sansa,

a real hard reset isn't possible,
you can format it though
warning, this removes everything

To format your Sansa E200 series MP3 player:

1. Open "My Computer."
2. With the player plugged into the USB port, right-click on the player (if in MTP mode) or the drive letter for your player (if in MSC mode) and select "Format" from the right-click menu.
3. Press "Start."
4. You will receive a warning that the format process will erase all data on your device.
IMPORTANT: Make sure you have backed up all of your data from the device before continuing with the format. Procedure will erase everything off the player. Agree to the warning.
5. The format will complete. Close the format window and your player should be ready to use.

After the format, please install the latest firmware update for your player. Please visit the following link to download and upload the Firmware on your Sansa E200:
http://www.sandisk.com/Assets/File/Downloads/firmware/e200fw01.00...

PLEASE NOTE: All files will be deleted. Backup your files. Your MP3 player must be in MSC mode before installing the Firmware update.

To set your player in MSC mode, please do the following:

1. When the player is turned on, press the “Menu” button.
2. Navigate to the “Settings” menu.
3. Navigate to “USB”.
4. Under the “USB” menu, go to “MSC”.
After changing the player to MSC mode, reconnect it to your computer. The screen on the MP3 player should read “USB Connected” and "MSC”
You can now complete the Firmware update download from SanDisk.com on your device.
Installation Instructions:

1. Unplug any other USB flash drives that's connected to any of your USB ports.
2. Download the firmware to your PC
3. Plug in your e200
4. Double-click on the downloaded firmware (e200fw01.00.12.exe) and follow instructions
5. Unplug your e200
6. Device will do it's own update process and will restart.
The device should be ready to be used again.

Try this: disconnect the player from the computer, hold in the volume + button, and reconnect the player to the computer while holding the volume + button in. Keep holding the volume + button for an additional 5-50 seconds. Windows should eventually go into recovery mode and revive the player- it will pop up a window that says Found New Hardware Wizard.
-----
Download the Sansa Recovery Tool from the Sansa website.
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out: http://www.sandisk.com/Retail/DriverDownloads.aspx
or
http://www.sandisk.com/DriverDownload/driverList.asp
-Tha Mp3 Doctor

With most MP3 players, some of the memory is used for system files and software. Just delete all the things you done use (i.e. pictures, playlists, Rhapsody Channels) and whatever space you have free is what you have to work with.

If you want more memory, I highly suggest a microSD card

Use Windows Media Player