Easily sync your music files from your computer to your phone
1.Connect the phone to your computer using a compatible USB cable. Once the connection has been established, select HTC sync on your device. Open My Computer (Windows XP), Computer (Windows Vista/Windows 7), or Finder (Mac).
2.On your computer, your phone appears as a removable drive. Double-click the drive representing your phone.
3.Drag and drop music files to your phone.
4.When you are done, use your computerís controls to safely eject the drive representing your phone and disconnect the USB cable from the computer and from the phone.
Hope this helped