Yes. If you order multiple audio transfers and select the MP3 option for all transfers, all MP3s will be put (in different folders) onto one CD (or DVD, up to the maximum capacity of a DVD).
"I am delighted to have these old 78's from my childhood now preserved in listenable form on a modern sound medium. I would not have thought it possible to do that at such an affordable price! Thanks too for the "preservation" copies. I am very satisfied with your work, and I am especially impressed with the promptness of your service. "