NormSoft has updated its Pocket Tunes Deluxe audio player to v3.1.3. The main new update is the addition of Windows Media PlaysForSure DRM support for the Treo 600, Tungsten E, and Zire 71. This fully featured digital audio player makes many Palm OS devices compatible with online music stores such as Rhapsody, Napster To Go and Yahoo! Music Unlimited.