Hi Vegitate Its not advisable to use "spent" compost for new seedlings as it will have used all the nutrients that were already in the new compost.
However, I always used spent compost when filling my planters, but I mix it with new stuff. Ratio of about 1 "spent" - 3 new. Or I throw it in the compost bin.
Check for grubs and other wiggerly things though.

Thanks Littlelegs, I will use it as suggested

Vegitate