>Also I don't think there ever were physical audio formats with DRM? Yes, there certainly were - basically all early digital audio media were encumbered with S

>Also I don't think there ever were physical audio formats with DRM? Yes, there certainly were - basically all early digital audio media were encumbered with SCMS[0]. [0] https://en.wikipedia.org/wiki/Serial_Copy_Management_System https://en.wikipedia.org/wiki/Serial_Copy_Management_System