Tell you what I do... I set up a template in MS Works as follows for an A4 page... you can do similar in any similar type program,
For standard jewel cases use following;
Front cover is 121mm * 121mm
Rear insert is 151mm * 118mm (5 by 7 crop is very close)
To set page for printing on both sides use page setup as follows;
Margins for CD fronts,
Left and Right @ 45mm
Margins for CD rears,
Left and right @ 29mm
All headers and footers at 5mm
Remember to set paper as A4, portrait mode. Use super glossy as paper type for reverse printing as bleed through is less.
You can print on both sides, just turn the paper over and print again.
You can set up a template for "double fronts" of 242 by 121 mm and do booklet printing too.
Much easier than all the so called jewel case programs I find.