Help! I'm using a purchased PowerPoint presentation that includes MP3 files. They won't play on my Dell Latitude laptop, but will play on other computers. My Dell is using XP Pro and if fully updated. I'm also using Microsoft Office 07 (fully updated). I've updated my Adobe Flash player (yesterday). When I click on the audio link I get an MCI error. It says "The specified file cannot be played on the specified MCI device. The file may be corrupt, not in the correct format, or no fil."