this is direct to printable CD'DVDs isn't it?
I use the epson R220 & use within the "Epson software" that came with it. It's usually spot on, but you may have to configure it a bit - it is a while since I used it,
but from memory, you can make the printable area
slightly smaller than the CD or DVD and you may have to set it a bit off center until you get it right, but then you know the settings for next time you use it.
Also remember when you choose print, choose Media Type CD/DVD
If the design you have done is far too big, you can hover over a corner and grap the corner to make it bigger or smaller.
Sorry, I am no good at explaining things