If you lost the disc but have a valid license key (usually on the CD sleeve or a sticker), contact Mimaki support. They may provide a one-time download link.
Mimaki does not publicly host the ISO for direct download on their main consumer page due to licensing. However, legitimate users have options: mimaki finecut 8 cd-rom iso
Mimaki originally distributed FineCut 8 on a physical CD-ROM. An is simply a digital clone of that disc. If you lost the disc but have a