Do you hear clicking when you turn? Are you sure the sound is coming from the driveaxle(s)? Have you inspected the rubber boots around the CV joints for cracking/splitting?
Sometimes a bad wheel bearing can make the sounds you describe. Did your alignment go out all of a sudden? A sticking caliper could also cause similar problems.
Sometimes a bad wheel bearing can make the sounds you describe. Did your alignment go out all of a sudden? A sticking caliper could also cause similar problems.