NoahCA, we want you to have all your music files backed up to the Cloud. I apologize that you are running into a little trouble, however, we are here to help you accomplish the task. I would like to gather a couple details to give you the best support.
What type of phone do you have Android or iOS? Where are the music files located in your phone (which folder)? Are you having trouble backing anything else up (photos, videos, etc)?
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