If some of your music did not synchronize to your BlackBerry® device, a warning icon appears in the Media section in the left pane. You can click on this icon to view a list of possible causes.

Try the following actions:

• Verify that your media card or built-in media storage has enough available storage space to store your songs.
• Verify that your music does not contain digital rights management (DRM) technologies.
• Verify that your music is in a supported format.
• Verify that mass storage mode is turned on.