Napster ever promised that all songs in the Napster catalog would be available to purchase without DRM protection. However, a part of WMA files from Napster still have certain limitations built into them so as to limit their uses according to Napster's policies. Additionally, if you are an old Napster user, you must have many DRMed music files downloaded or purchased from Napster.
Crack/Reset Napster DRM, and Convert protected Napster songs to MP3
This article is a short guide about removing Napster DRM and converting the Napster songs to unprotected MP3 files to use your music as you like:
Four ways to remove DRM from WMV and WMA (Windows Media video and audio files)
After converting, the files are DRM-ripped. The non-DRM music can be transferred to other players like
iPod/iPod Touch/Nano/Classic,
iPad,
Zune/Zune HD,
PSP/PSP2000/PSP go, cell phone, Blackberry etc. freely.