Are you sure it's coming from the spokes? If it is the spokes, maybe
the wheels were not stress relieved. This should be done as the last
step of wheel building and then the wheel must be touched up (trued)
again. Anyone who has ever built more than a few wheels should know
this. If the builder did not do this, it's a mark against him. You can
read more he

http://sheldonbrown.com/wheelbuild.html

Before a wheel is ready for the road it must be stress relieved, because the bend in the spoke has to accommodate itself to the shape of the hub flange and vice versa, and a similar process may go on where the nipple sits in the rim.

After you do this, you will probably have to do some touch-up truing, then repeat the stressing process until it stops making noise and the wheel stops going out of true.

If the wheels get trued properly, there no reason not to go on your
ride.