From Mark Schiffer:
• For many of them, all that’s necessary is to open the file and the music will be in front of you on your computer screen. Adjust the volume on the computer and play along from the screen. It’ll take a little getting used to but it’s worth it.• For others, there’s a PDF of the solo part you can download and play from, while the computer, or your cell phone on external speakers, is playing the accompaniment.• For others, there are two video files. One is complete: it plays the recorder part with the continuo. The second plays only the continuo, so you are the soloist. These also must be played while you’re sitting in front of your computer, or, if you’ve got the capability, stream it to your TV.