Excel Security Warning

I have my music catalogued in an Excel 2007 file. My Operating System is Windows 8.1 64-bit.
One of my columns I have dedicated to Hyperlinks to the particular MP3 file.
However, when I click the Hyperlink, I receive the following warning:

Opening D:\CD's-all\06662.mp3
Some files contain viruses or otherwise be harmful to your computer.
It is important to be certain that this file is from a trustworthy source.
Would you like to open this file?
OK Cancel

If I click OK, the Hyperlink is successful.
How can I stop receiving this warning?

Tried all suggestions, without success.