The easiest way to get the song to your DJ is to forward your email with the link to the song. This will allow them to download the song and have it ready for that special day.
You can also download the song to a thumb drive and give it to the DJ on the day of the wedding. We suggest you get a thumb drive that has both the new USB-C and USB-A (the original plug). Here’s one on Amazon.
If you want to make absolutely sure your DJ has the song, you can do both!