Thank you for reaching out. The files can be downloaded here:
Please contact me again if you require any more assistance accessing the materials.
Sorry my initial message was unclear. The question should have read:
"how can I download the Video files directly onto a USB external drive"
I have COPIED & PASTED the audio files onto an external drive but unable to do the same with the Video files!
In addition to the above please note that the Web Extras www.dummies.com/extras/harmonica , shown on page 41 of the 2nd Edition, does not exist when searched on a web browser.