You can preview the guitar.ogg below to make sure the file works properly. Open the guitar.ogg file from that folder. Now you will locate the folder where you extracted the song files to. After that, go down to where it says 'Guitar Track', and click on the '.' to the right of that. If you are following the example, type in 'nottinghamlace' in the Song Name section.This will open a pop up where you will add the song files. Find the 'Add' tab, click on it, and under that, click on 'New Song'. You will again need to use your file extractor to extract the files from the download into another folder. Download the song from the external website. This will take you to an external site where you can download the song. Scroll down to the list of songs, and find Nottingham Lace once again, and click on the download link on the right.
Located under 'My Official Career Packs', click on 'Puppetz Hero Zero' this will take you to another thread with a setlist of songs from PHZ. The link will take you to a separate forum, which contains FoF user Puppetz. Notice that there are multiple links for the same song. Under 'B', you will scroll down to find the artist Buckethead, and the song Nottingham Lace. The song used for an example is 'Nottingham Lace' by Buckethead. Some of the download links will take you to a download/dropbox site where you can download the file, while others will take you to the thread which contains the song download.