I found this web-site tonight; which has free downloads of children's music. The main page has a "what's new" section; but if you look on the right, you will see the alphabetical index which has many more offerings. Quite a few of these freebies were educational; like the song titled "Mulitply By Two."
The bottom line is; We try not to insist on parent-led learning or gravitate toward child-led learning. We try instead to focus on God-led learning and ask for His input and perspective on every aspect of our home school. That way, when others fuss about what Dan and I are doing and make me second guess our decisions -- I can go back to our decision process and find God's fingerprints, reminding me that this is His way.