<A href="http://www.audioholics.com/news/editorials/DRMreducedbatterylife.php"><IMG style="WIDTH: 100px; HEIGHT: 100px" alt=[ZenVisionM1] hspace=10 src="http://www.audioholics.com/news/thumbs/ZenVisionM1_th.jpg" align=left border=0></A>A study recently demonstrated that playing back MP3 and WMA files encoded with DRM (digital rights management) copy protection can reduce battery life up to 25%. One of the most important factors when you’re thinking about buying an MP3 player is battery life. This is usually quantified in number of hours the manufacturer promises the device can play back music from a single charge. The problem is associated with the extra processing power required to decode copy protection. The worst offenders are the online subscription services like Napster and Yahoo Music that give you access to their entire library of music as long as you're subscribed.
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