He repeatedly stabbed his wife, Regina MacFarlane, in the neck in their Bay Shore home on Oct. 21, 2005.
Jurors heard the couple arguing, the victim screaming and her 10-year-old daughter crying on a 911 tape recorded in the moments surrounding the attack. The girl, now 12, also testified.
Prosecutors said MacFarlane stabbed his wife out of anger over a looming divorce.