Here is how to add music to the Dive Headphones: 1. Place the MP3 music files that you want to transfer to the Dive headphones on your computer, where you can find them again. The sequence is not important, they will be played in alphanumerical sequence. If you want to have a special sequence to your tracks, you can add a number as the first file name. 2. Connect the Dive to your computer with the USB cable. Please use the cable that came with the headphones, since other USB cables may be wired for charging only, and may not work. 3. Your Dive will now pop up in your explorer folder overview as a new drive. Total capacity is about 991 MB. 4. Now you simply drag-and-drop the MP3 files from their location onto the Dive, or you mark the files, copy them and paste them onto the Dive. Do not use folders of any kind, and do not try to place other file types on the Dive's memory. MP3 files with a resolution of 320 kbits/second is maximum quality possible. Please note that the owner's manual contains an error about random play, stating that MP3 play will always be done in random sequence. Unfortunately, this is an error. All replay of MP3 files from the internal memory is alphanumerical, NOT random. As mentioned above, you can add a number to the track title, and the tracks will be played in numerical order, until no more numbers are present, after which replay is in alphabetical order.