Amazon jumps in MP3 ring

With known Fact an Ipod can't play copy protected music purchased from napster or real networks and Zune can't play songs bought on Itunes.Amazon.com plans to open a online music store later this year offering only songs that are free of copy protection technology,which can be played from pc's to portable gadgets Ipods or Microsoft Zune.It will offer millions of tunes from 12,000 unnamed labels.