Messager USB Duo Audio Content Preparation:All messages that are available for the Messager USB Duo to play are stored on an industry standard USB flashdrive. Messages should be formatted as a mono MP3 file not to exceed 128Kbps @ 48KHz. Follow these steps toadd or remove files from a USB flash drive.Step 1: Plug the USB flash drive into an available USB port on a any PC or MAC compatible computer. The flashdrive should show up as a “Removable Disk” on the computer.Step 2: Drag ‘n’ drop the file(s) to the USB flash drive in the order you want them to be played on the unit. Ifremoval of files are required then select the files and press the key on the keyboard.Step 3: Remove the USB flash drive from the computer.Step 4: Plug the USB flash drive into the Messager USB Duo for playback.If the USB drive ever needs to be erased completely then it can be formatted using your computer. Drives smallerthan 2GB can be formatted using FAT, and drives 2GB or larger can use FAT32.Note: Audio files should be named using alpha-numeric labels (A -Z, 0 -9).Any other characters or symbols, such as +, -, /, (, ), &, etc. should NOT be used.9