Oakley THUMP PRO User Manual page 18

IF THUMP PRO WON'T PLAY MUSIC FROM WINDOWS MEDIA PLAYER (WMA)
Songs ripped from CDs with the "Copy Protect Music" option activated can only be loaded onto THUMP Pro using Windows
Media Player's "Copy to CD or Device" or "Sync" options. The same is true for songs purchased online from stores such as
Urge, Napster, Music Now, etc. See the section on "LOADING COPY-PROTECTED (DRM) MUSIC."
To prevent Windows Media Player from applying the protection feature on the music you rip from your CDs, you must turn
off the "Copy Protect Music" option. Note that this will not fix the music that you have already ripped onto your computer,
nor will it fix the music that you purchased online.
STEP 1: Open Windows Media Player.
STEP 2: At the top right corner of the window, click on the arrow that points downward. Select "Tools" from the
dropdown menu then select "Options..."
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THUMP PRO USER GUIDE