When you copy music media files between Microsoft Windows Media Player and a supported portable device, copy operations may take longer to perform as more items are added to the Media Library. Specifically, the time to copy increases exponentially as the number of items in the Media Library increases.
Download: Update for Windows Media Player 9 Series (Windows 2000/XP/2003)
Download: Update for Windows Media Player 9 Series (Windows 98 SE, Windows ME)