Hi Rosa there,
Please take below tips to work around your mp3 file issue:
1. Please make sure your download is COMPLETE, NO corruption and/or other unknown error with the said mp3 file.
2. Ensure that you have the Administrative rights to run your system’s apps.
3. Try opening other mp3 file type media on your disk to check if there is any error with your filesystem and/or Registry Editor.
Additional information:
1) Read “what is an mp3 file?”: http://en.wikipedia.org/wiki/MP3 first.
2) Refer to “Tips to fix/open an mp3 file”: http://advancedfilefixer.com/fix-file-ex…
Thanks and good luck!