I do not see how setting it to Read-only
would affect how you can print, but you will not be able to change the music file with it set as this.
I have changed WMA
with success. I'm not sure about the success with the other formats. TXT
would not be a music file, and would not work wen changed to MP3
This will show you how to make a TXT file with a list of your Music file directory in the command prompt. You can then print the TXT in Notepad or Wordpad. See:
How to Save and Print a File and Folder Directory List in Vista