If it's only 185 bytes it can't be a music file. (Indeed it can hardly be anything at all except, possibly, just the icon representing a music file).
If you've got Windows Media Player on your PC (with version 9 or later, which is quite likely if you're running XP) you can burn audio CDs without even opening the software.
Simply ensure that the music file is visible on your screen. (i.e. open the folder that it's in or have it displayed on your desktop). Place a blank CD into the drive and accept the option that appears allowing you to display its contents. (Since there's nothing on it, that will just open an empty window). Drag the music file into that window and accept the option to burn an audio CD (not a data one). Job done.