When you're following a link to an MP3 file in the Chrome Web browser, you'll find instances when the file might not download, but instead will play inside a music player in the browser window. This doesn't mean the MP3 file has been converted to an HTML file -- it's just using a player to play the file. You don't need to "convert" any HTML to save the MP3 file to your desktop -- all you need to do is follow a brief process involving Chrome's "Save page as" feature.
Type the URL of the MP3 file into the address bar and press Enter. You can also click a link leading to the MP3 file or visit a bookmark you saved for the MP3 file, if you created one.
Click the wrench icon located near the upper right corner of the screen. This displays the settings menu.
Click "Save page as."
Type a file name for the MP3 file and end it with ".mp3" (without the quotation marks). Click "Save" when finished. You've successfully saved your Web MP3 file to your PC.