hello i am kristian van bekkem and i may have the answer to this problem. the format that you are sending is drm. there are many files like this. you can download software to switch the format from drm to mp3, wav, and wma. switch is the best option, you can download it from this site. good luck .http://www.nch.com.au/switch/plus.html
kristian van bekkem, November 2006