 As a result, that music was locked into this ecosystem and available for portable use only through the purchase of one of the above devices,  or by burning to  CD and optionally re-ripping to a DRM-free format such as MP3 or WAV.
<meaning-changed>  As a result, that music was locked into this ecosystem and available for portable use only through the purchase of one of the above devices,  or by burning to  CD and optionally re-ripping to a DRM-free format such as MP3 or WAV.
 As a result, that music was locked into this ecosystem and available for portable use only through the purchase of one of the above devices, or by burning to Compact disc| CD and optionally re-ripping to a DRM-free format such as MP3 or WAV.