A judge ruled Wednesday that a recording made by a murdered schoolteacher can be used as evidence in the case against her alleged killer. Special education teacher Kathleen Weinstein was carjacked in Dover Township 11 years ago. Weinstein secretly recorded her final moments on a cassette before being suffocated by her abductor. At that time, 17-year-old Michael LaSane pleaded guilty to murder charges in the slaying. An appeals court later overturned the plea after it was revealed the suspect's public defender had a sexual encounter with LaSane's mother.The judge and others involved in the case listened to the audiotape Wednesday morning. The victim?s husband, Paul Weinstein, did not want the tape played in public. He even had the tape copyrighted to discourage its use. Prosecutors, however, say the tape is ?significant" evidence against LaSane.