Possible used Steller 1 disks?

I presently have a screenprinting business but am considering expanding into the field of embroidery. A friend gave me an old MELCO Stellar 1 machine ....it's great to "learn" on but I understand that I cannot get any new design disks because the Steller 1 format is no longer serviced by MELCO or any company. I did receive lots of disks with the machine, but wondered if anyone out there had any to dispose of .....and. any information on this machine would be helpful. Anyone out there with the same machine? Thanks.