On the one hand is almost forced to use the Cloud Player. If you downloaded the file, I have received only one file without mp3 file extension. I then named on suspicion me the files themselves and an mp3 extension range hang. To play that worked. Then I copy the file onto a CDR, which meant that the file but indeed happening without any sound. So useless. Therefore, I warn mp3 files if you want to burn to buy from Amazon.