content: I have had my Rio 800(128) for approximately 50 days now and have used it everyday.I followed the directions for calibrating the battery and I have had excellent results with the battery life meeting and sometimes exceeding the 10 hour advertised performance for the first 30 days. Yet recently my player developed a BATTERY LIFE problem and now I get approximately 1.5 hours of music before my player needs to be recharged. I have tryed to recalibrated but still I get the same results.After reading other comments about similar problems posted here I beleive this problem runs much deeper than that of a slip in quality assurance department or a faulty battery.If this player performed as advertised it would far exceed any other player in its market place, yet it does not! What good is a portable MP3 player that is always charging?