I cant open windows media player & cant play any song or video

No 500mb of songs is not a problem for Windows Media player. I have in excess of 400GB of music on a network hard drive and it copes without difficulty. If you look at the bottom of Media player you will see a pair of icons to the left of the play button. The one furthest left is the "Shuffle" button.

Go to "My Computer" and click on the V-Touch (named Removable Hardware) and open the "Music" folder. Click on one song you want to play or highlight multiple songs that you want to play click open and they should open in Windows Media Player, if its your defalt music player.

Ok, it seems that that you downloaded media converter. However, please note that its only for the videos. You can't convert songs by this software. You should use it only to convert video files. For songs you can convert them in itunes or use Windows media player.

Cheers...

Open your MP3 through Windows Explorer, open the Playlists folder and delete whichever playlist you want deleted. Edit it through WMP11 and reinstall. You can rearrange and delete songs through Explorer, but you can't add songs.

1. Use Windows Media Player to put songs on your Coby MP3 player. Download songs in MP3, WMA, or OGG format from a legal downloading website. If the file is not one of the previously mentioned files, you must download a converter to convert the file to one of the correct files that can be played on Windows Media Player. Rip a song from a CD by inserting the CD and then click on the option to "Rip" the song to your library. Some Coby MP3 players do not need Windows Media Player to add songs, so be sure to check your user manual to see if there is an even simpler method.
2. Connect your Coby MP3 player to your computer using the USB connector that came with your MP3 player. The player will show up under the "Devices" option on your Window Media Player application.
3. Click on the "Library" option to view all of the songs stored on your Windows Media Player library. You can drag the song to the MP3 player in the "Devices" section, or you can right-click on the song and choose the option to transfer the song. In the pop-up box choose your MP3 from the drop-down menu and then click on the "Transfer" button.
4. Right-click on the MP3 player in Windows Media Player and choose the "Eject" option. Disconnect your MP3 player from your computer and turn it on. The song will now be available on your MP3 player. Press the bottom button to play or pause the song.
5. Add videos and pictures to your Coby MP3 player if it supports those files. The process is similar to transferring audio files. Plug your MP3 player into your computer. Open the photo file on your computer and drag pictures into the player. You can create folders to organize the pictures.

If you are using windows xp open my computer
The mp3 player should be there as a removable drive
You can drag and drop mp3 files into
Or you can use windows media player to sync the songs you want on it

To delete files from your mp3 player using Windows Media Player 10:

http://www.microsoft.com/windows/windowsmedia/knowledgecenter/mediaadvice/0085.mspx#EDF

To delete files from your mp3 player using Windows Media Player 11:

My Directions:

1. Connect your mp3 player to the computer

2. Open Windows Media Player

3. Click on the icon of your Mp3 player on the left-hand side of the Library

4. Click on the Songs, Tracks, or other Music Folder

5. Find a song or songs that you want to delete

6. Left-click the song once to highlight it

7. Press the “Delete” button on your computer’s keyboard

do not open window media ....go to my computer...open the folder that has all of mp3 files (on pc)...now plug up your mp3 player....go to start/ my computer (yes another window)/do you see a new icon/drive (it should be the mp3)...open it.....now resize both windows so that they side by side (or top & bottom)..now click & drag (or copy and paste) all the songs you want from pc folder to the mp3 .....once you are finish do not .........do not just unplug the mp3 player....go to the task bar (your lower left) and look to safely remove this device....hope this help....have fun

Use Windows Media Player

The instructions in these pages, which are largely links, pertain to Windows Media Player 10 and 11 only.

Windows Media Player is made by Microsoft. The general help page for Windows Media Player is:

http://www.microsoft.com/windows/windowsmedia/default.mspx

Through this link, you can enter a variety of search terms that will help you find what you are looking for (exs.: “add files to my mp3 player”; “delete files from my mp3 player,” etc.)

Important Vocabulary:

The code word for “mp3 player” in Windows Media Player is “DEVICE” or “portable device”

The code word for adding files is “SYNC,” “syncing,” or “synchronizing”

The code word for copying files from CD is “RIP,” or “ripping”

The code word for files stored on both My Computer and my Mp3 player (when it is connected to the computer) is “LIBRARY”

To add files (SYNC) to your mp3 player using Windows Media Player 10:

http://www.microsoft.com/windowsxp/using/windowsmediaplayer/wmp10/harrison_wmp10.mspx

To add files (SYNC) to your mp3 player using Windows Media Player 11:

http://www.microsoft.com/windows/windowsmedia/player/faq/sync.mspx

To delete files from your mp3 player using Windows Media Player 10:

http://www.microsoft.com/windows/windowsmedia/knowledgecenter/mediaadvice/0085.mspx#EDF

To delete files from your mp3 player using Windows Media Player 11:

My Directions:

1. Connect your mp3 player to the computer

2. Open Windows Media Player

3. Click on the icon of your Mp3 player on the left-hand side of the Library

4. Click on the Songs, Tracks, or other Music Folder

5. Find a song or songs that you want to delete

6. Left-click the song once to highlight it

7. Press the “Delete” button on your computer’s keyboard

To copy (RIP) files from CD to Mp3 player using Windows Media Player 10:

http://www.microsoft.com/windowsxp/using/windowsmediaplayer/getstarted/ripcd.mspx

To copy (RIP) files from CD to Mp3 player using Windows Media Player 11:

http://www.microsoft.com/windows/windowsmedia/knowledgecenter/easystart/mp11guide.aspx#RippingCopySsongsfromCDstoYyourCcomputer

Open my computer, right click sansa file, hit format... it should wipe out the whole mp3 player... fresh for a new set of songs