* The file may be corrupt or damaged. If the file is corrupt or damaged, it may not be able to be played properly on Amazon Cloud Player. Try downloading the file again or from a different source.
* The file format is not supported. Amazon Cloud Player only supports certain file formats. If the file format of your music is not supported, you may need to convert the file to a supported format before you can upload it to Amazon Cloud Player.
* The file is too large. Amazon Cloud Player has a limit on the size of files that can be uploaded. If your file is too large, you will need to reduce its size before you can upload it to Amazon Cloud Player.
* The file is not authorized. If you are trying to play a file that you do not have the rights to, you will see an exclamation mark next to the file. You will need to purchase or obtain the rights to the file before you can play it on Amazon Cloud Player.
If you are still seeing an exclamation mark next to your music on Amazon Cloud Player after trying the steps above, you may need to contact Amazon customer service for further assistance.