Target, the big-box retailer, is finally moving into digital music, with the low-key launch of a SonyBMG album. The new album from John Legend, ”Live From Philadelphia” launched exclusively in Target stores last week, and is also available in MP3 format through Target.com. This new promo also ties into Target’s deal with SonyBMG, where the music label is debuting DRM-free MP3 music cards. (Paidcontent)