Yes, it's a valuable site. Although it uses Noteworthy Composer (which I have) I like to download the songs as MIDI's. Then I can change the sound on them.

For example, the first tune I downloaded used the synthetic fiddle sound, a sound I really dislike. I tried changing it to flute, but the change just wouldn't take. So I returned to the site and downloaded the tune as a MIDI, and then I could have my way with it.

I was disappointed when I downloaded a tune with complex timing (The Summer Is Come) and found the durations to be all whopperjawed. I was hoping to save myself the time it takes to enter such tunes. Such is life.