My e250 does not save songs in the library although it says it has transfered the file

If you'a an iPhone user, you can use iTunes to transfer music from iPhone to computer first. You may have well known that iTunes only transfers purchased items from iPhone to iTunes library, so iPhone users can move purchased songs from iPhone to iTunes library.

1. Run iTunes and click "Edit > Preferences > Device > Prevent iPhones, iPods and iPads from syncing automatically" at the upper left corner of iTunes window.
2. Plug iPhone into computer via the USB cable, and then click "File > Device > Transfer Purchases" at the upper left corner.
3. iTunes will start to sync all the purchased items back to its library.

After the syncing process, you will get the music files in your iTunes library, including the purchased music files. You are able to find the music files in the folder of your iTunes media files on your computer.

The next step is really easy. Since the music you want is already saved on your computer, you can now simply connect your MP3 player, drag and drop to transfer songs.

On the contrary, here's also a guide about Three Ways to Transfer MP3 Files to iPhone in case you need help.

I had TouchCopy recommended to me for that on Apple support communities, worked really well.

open up itunes and the music library tab then drag and drop your saved music into itunes the music will take a little while to load but after it does you will be able to sync it to the ipod

on some systems you have to give the music a destination,example,My Document,or My Music and if windows media player is the player on your system,then it should let youplayit or transfer it to yout mp3 player

You will have to use windows media player to load your songs onto your mp3 player. Open windows media player and see if the songs you want are there (they should be). If not, go to itunes and right click on a song and click on a option that should say open file location and go there. Then transfer all of your songs to your windows media player and transfer them to your mp3 player. Then it should work. If you need any more help, ask.

I do mine through Windows Media Player
1)Plug in Sansa
2)Open up Windows Media Player and wait for the Sansa e250 icon to show up under the library. First time, might say 'What device is this' or 'Autoplay'-for autoplay,you click 'sync media files to Sansa e250 using WIndows Media Player'
3)When library shows, click 'Sync' if it is not already there.
4)Just simply click and drag the songs you want from the computer library to the list pane on the side.
5)Once your done, click 'Sart sync'

TO DELETE
1)Plug in
2)Wait for the icon under Library in WIndows Media Player
3)Go to Songs under Sansa e250
4)Right click desired songs and choose Delete. You only want to delete from Sansa e250-nothing else

~loli~

Plug player into PC
Open Windows Media Player
Find songs by clicking Library tab
Once you find the, click the sync tab
Drag to windowpane on left that says drag files here
Click Start Sync

-Tha Mp3 Doctor

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.

JUST EXPORT THEN MAKE WINDOWS MEDIA PLAYER TO REFORMAT THE SONGS AND YOU SHOULD BE FINE

Someone else mentioned this problem....I thought it might be that some files have different artist names (or vice versa?). You really have to keep a clean library with proper summary fileds (artist, title, track number, etc.). First of all, you should always be using MTP mode (USB mode in Sansa player settings). MTC mode is problematic. Are you using WMA or mp3 files? The other person had the same problem using WMA files....maybe using mp3s would fix this.