My Sony Vegas Pro 12 Software Won't Let me Import Music into the Media. How can I Fix this. This is really annoying me, Please Help. All the Help is Greatly Appreciated Thank You. It Keep Saying This...

Warning: An Error Occurred while Opening One or More Files

The Reason For this Error Could Not Be Determined.

This is what I do.

I got to Files

Open
All Files **

and click on an ITunes MP3 and it says that saying? Is there any possible way that this could be fixed? if so how? I really could use the help, thank you so much for your time.