Word 2007 allows us to add almost any kind of file to a Word document—even sound files.  The commands to do this are buried deep within the recesses of the insert menu, but once discovered, they can bring music to the dullest of documents.

First, move your cursor to the place in your document where you want the sound file to appear.  Then, click the insert tab at the top of the screen.

Click the the text icon, and choose object.

In the window that opens, click create from file.

Click browse and find the sound file you want to add to your document.  Once you have found and opened the file, click ok.

Your sound file will now appear in your document with a speaker icon.  If you click the speaker icon, your song will play.

Besides adding music to your documents, a more practical use for this tool might be adding spoken dialogue to explain things where vocal tone is more effective than the written word.  Whatever you use this trick for, remember sound files can be quite large, and will add download time if emailing your document.