Audio recordings of a lengthy conversation between the killers of Kimberly Proctor capture the teens laughing and making jokes three days after being arrested for her brutal rape and murder.

The audio transcript is from a chat between convicted murderers Kruse Wellwood and Cameron Mofftat, in the back of a sheriff's van on the way to their first court appearance in June last year.

The boys were just 16 and 17 at the time of her brutal slaying. They were arrested three months after Kimberly's murder.

During the taped conversation, the boys appear to display little remorse for the crime, instead focusing on how the food was during their detention – "gross" – and how they missed eating fruits and vegetables.

At one point Wellwood even joked about investigators asking him whether he feels any remorse at all, and Moffat bragged that he laughed when police questioned him.

Wellwood makes several casual statements about his fate, telling his friend: "This lack of freedom isn't really bugging me."

Wellwood said he had "a million escape plans" the night before his first court appearance.

"It's hard to escape from this," Moffat replied, before breaking into laughs.

Wellwood told his friend that he stayed quiet during interrogations but accused his friend of telling police what happened.

"I was exercising my right to silence the entire time. I know you weren't," he said.

Wellwood tells Moffat that police showed him video of his interrogation.

Moffat denies leaking any information: "I didn't talk about everything."

On March 18, 2010, after declining her schoolmate's advances, Proctor was lured to the home of one of the boys, where her hands and ankles were duct-taped. They stuffed a sock in her mouth and sexually assaulted her for hours.

A knife was used to mutilate her body and she eventually died. An autopsy revealed she couldn't breathe because of the tape over her mouth.

Her body was placed in a freezer in the garage. The next day the teens carried her body in a duffel bag on a public bus to the Galloping Goose Trail, where they lit her on fire.

Text messages between the co-accused revealed that they had carefully planned the abduction and murder. They'd also been involved in joint rape fantasies for at least a year before the murder, according to a psychiatric report presented in the courtroom.

Yesterday the teens were sentenced to life in prison with no chance of parole for 10 years.

A spokesperson for the Crown said the boys show little chance of rehabilitation. Both were labeled as psychopaths by psychiatrists during the two-week sentencing hearing in B.C. Supreme Court.