Preheat oven to 350 F
Coat a 9x5 loaf pan thoroughly with butter
In a large bowl and using a stand mixer, beat together cream cheese, butter and sugar until light and fluffy.
Add in eggs 1 at a time, beating thoroughly after each one
Add in vanilla
In a separate large bowl, combine flour, salt and baking powder
Fold the flour mixture into the wet mixture until it's completely mixed in and there are no pockets of dry flour.
Gently fold in cranberries
Pour batter into buttered loaf pan and bake for 55 minutes, or until toothpick inserted into the center comes out clean
While the pound cake is baking, prepare the cranberry sauce by doing the following:
In a large sauce pan, combine sugars, water and orange juice over medium/high heat until sugars are completely dissolved.
Add in cranberries and pumpkin pie spice and cook until cranberries start to pop.
Remove from heat - sauce will thicken as it sits
Allow to completely cool before pouring over pound cake