I know nothing about Mac, but you might check the help page at embroidery library, or even email
[email protected]. I use a lot of emblibrary designs and with my PE770 have even embroidered all the blocks for a few quilts. PE770 tells you which color change you are working on, so with a printout of the color change sheet from emblibrary I can follow exactly where I am. I would love to have a machine with a 10x14 embroidery field, but for the price you can't beat the PE770 on designs up to 5x7.