Dr. Peter, if you have Win 7 (actually any version of Windows), you will have MS Movie Maker (or download it free from M$). It will allow you to attach an audio file (many formats) to a digital picture. If you only want text and music, without graphics or a slideshow, you can use the Sniping Tool or Shift+PrtScn to capture the screen as a .jpg file Screenshot. With only one .jpg you can upload your audio to YT.

At Step 2 in YouTube's instructions, select ANY digital picture or the Screenshot you've created above. Now, MMM will give you the option of ending the video and audio together.