Music not recognizing

Hello,

virus is what is causing the problem.

There is either a virus on your PC or on the player.

To figure this out, test the player with another PC and see what the out come would be.

Which ever is responsible for the virus, use an anti virus to remove the virus.

All the best.

the files you are trying to use, are they mp3 format? some players wont recognize other formats like wma. There are programs you can use to convert files though.

Sansa C240 can only read SD cards that are NOT SDHC - that means it can only read up to a 2gb Micros SD card.

On Windows XP, when you open My Computer, the Sansa C240 shows up at the bottom, under "Other". Because of DRM restrictions, you cannot copy media files to the C240 using Windows Explorer. You have to use Windows Media Player to sync playlists to the C240 (WinAmp can do it also).
I also suggest that you check out RockBox. It's an alternative operating system for portable media players and they have a version for the Sansa C240. It will give you some additional functionality.
As far as I can tell, to copy files to the microSD card (if you're using one) you have to use a media card reader, then insert the card into the C240.

I'm not sure what you are asking, but maybe my experience can help you. I was using Windows 2000 (it has no DRM) and the Sansa C240 was displayed in Windows Explorer like a removable drive. I could copy and delete files in Windows Explorer. I switched to Windows XP and when I connected the C240, no files were displayed for it in Windows Explorer. I realized that XP had DRM and all the media files had to be transfered with Windows Media Player. When I opened WMP, it recognized the C240, but it didn't list any of the mp3 files I had already loaded on the C240. WMP asked if I wanted to delete all the media currently on the C240, but I clicked No. After that, WMP worked like the old files didn't exist. It would only delete files that had been copied to the C240 when it was synced.
I would recommend that you use Windows Media Player (or WinAmp) to delete all old media files on the C240 and use the sync button to copy and delete files from the C240. See Windows Media Player help for details.

I just purchased this model for my boyfriend, had a hell of a time trying to figure it out, but after doing numerous google searches, I figured out that you have to place the lock/unlock or "hold" on some models into the lock position, then hold down the rewind button DON'T LET GO UNTIL THE PC RECOGNIZES IT!! It should work. I downloaded all the firmware and stuff I could (not even sure what firmware is... lol... just did it cuz that's what I read to do). Once I did this, it picked it up within 60 secnods and now my PC recognizes it everytime I plug it in. I was up unitl 1am this morning trying to get the darn thing to be recognized... I hope this saves you some sleep! LOL

Sansa c200 series – Computer/OS Not Recognizing
Connect the device to the PC in MSC Mode
View/c200: Turn on then press and hold the rewind button while plugging to the PC
If that fails, unplug the Sansa from the computer. Uninstall all the Sansa software in the add/remove programs section of Control Panel. Reinstall the clean version of the software from Sandisk’s website – make sure you get the files for the c200 series. Then replug the Sansa and try again. The root of the problem is that Sansa has one set of drivers and Windows has another. If you plug the mp3 player into the computer before installing the Sansa drivers, the Windows drivers will trump the Sansa’s.
Here is a helpful link from Sandisk on the problem with extra information on Vista operating systems:
http://kb.sandisk.com/cgi-bin/sandisk_en.cfg/php/enduser/std_adp.php?p_faqid=42&p_created=1221328944&p_sid=8VPwlRmj&p_brand=sansa&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NzQsNzQmcF9wcm9kcz00JnBfY2F0cz0mcF9wdj0xLjQmcF9jdj0mcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1jMjAw&p_li=&p_topview=1

-Tha Mp3 Doctor

The photo files that aren't showing up don't meet the specification in some way or another - they aren't jpeg, the resolution is wrong, or the file size is wrong. Transferring music files from card in mp3 player to computer may not be possible - connect mp3 player to computer, double-click my computer, and open photos folder or any other folder that looks relevant - see if the said photo files are in there. If not, then you are out of luck.

Not Mac compatible - sorry; you will get the internal drive to show up, but the files may or may not show up; they may or may not transfer

TRANSFER PHOTOS
To transfer photos to your Sansa c240:
1. Open Sansa Media Converter on your PC
2. Connect Sansa c240 to the computer.
The detected Sansa c240 will list the available space and total space on the device. If more than one
device is inserted, only the first device will be supported.
3. Add the media files to be converted and transferred to the device.
4. Press “Convert” button to start the conversion process and transfer all of the files in the selected
media window and output them using the parameter setting for each media type. A convert status
box will appear showing which file(s) are being converted and the percentage of that file along with
all of the files.