Synchronize to continue your music subscription

If your music has DRM it willonly allow you to sync once. they want you to repurchase the music. Try syncing music that is DRM free. If the new file work that is your problem.

http://www.sansaworldmp3.com/
http://www.sansaworld.com/

The "synchronize files to continue" is annoying, and you are likely to get it again. If the music files on your player came from Rhapsody, the short-term solution is to re-synch the files through Rhapsody itself. If your subscription to Rhapsody, Overdrive, etc. ever expires, you will also get this message. The only long-term way around this problem is to only load songs that are in mp3 format (Rhapsody has an Mp3-Only subscription, which is different from its regular subscription; Limewire is another choice - but it is prone to have viruses, and some ISPs will cut off your broadband if you use the service). If you wanted to erase all songs and start over from scratch, you could update the firmware on the player - it will have the side effect of erasing everything on the player.

Good luck!

-Tha Mp3 Doctor

I ran into the same problem with my Sansa when listening to legally downloaded audio books from the local library. This is what I found:

• " Are you sure the player is in MTP(plays for sure) mode when you transfer it? You can check by going to settings>usb mode on the player itself. I think it needs to be for you to use library files like that. " (This worked for me)
• "are you copy and pasting the files? if so you will need to use WMP to sync the files. copy and paste might not be transferring the license." (didn't try this -- didn't need to)

Hope this helps.

Here's the deal with WMA files - once your subscription expires (or really,  the license on the WMA file expires) - you will have to renew your music service subscription or the song will no longer play on your device. 
Use Mp3 format songs - they'll never give you this problem.

renew your subscription, then reload the songs onto there

get rid of win media 11 completly uninstall it go back to old nero or old windows media player or copy and paste songs straight to mp3 player on my computer drive letter output
any stolen music or music not haveing a tag to is getting sent up the road to gov.
most song are pay right now song these are subscritions
windows is helping in cracking down on music jackers

Maybe you should mention that if you format, it will delete all your songs?

1. go to the settings menu on your player
2. go to USB and change it to MTP
3. Plug it into your PC
4. Open My Computer and right click on your player
5. Click on format
6. open windows media player
7. click on library and start adding songs to your player
8. click on "sync" at the bottom of the playlist on the right
9. that should do it!

That means you will need to transfer one track to your device from rhapsody..the songs you have from rhapsody has a license in them...the licenses get renew every month..that means if you discontinue your service, you are not going to be able to play those songs...just try to transfer one track from rhapsody to your device and that will solve your problems...

Okay, here's what i've encountered:  songs that I downloaded on rhapsody, without purchasing, only lasted about 7-10 days unless i reconnected.  once my trial period ended, i lost all the songs.  songs that i've purchased i've had no trouble (although if you load them to the sansa immediately after download, you may get the same message.  its best to wait at least 24 hours).  good luck