Your GLYDE should have come with a CD-ROM. Install the necessary features to your home computer. Connect your phone to your computer via USB port.
Then, you should be able to browse through the folders on your phone as if it were a regular computer.
- For Wallpaper, you want to move the files to the folder called my_pix
- For Music, move them to my_music
- For Videos, move them to my_flix
Be reminded that the file names can be only numbers/letters with no spaces or special characters. And, I think they can only be 25 characters long.
Give that a whirl and report back!