The Judge in the Kazaa trial has lashed out at evidence presented in the landmark lawsuit as a "dog's breakfast".
As the two sides debated details of a mountain of final evidence late on Thursday, Justice Murray Wilcox said: "I have never seen a greater dog's breakfast over documents than in this case".
For nearly three weeks Justice Murray Wilcox had listened to the record labels and Sharman Networks' drawn-out arguments on the legalities of Kazaa.
The case has frequently been delayed due to lack of evidence, all while copyright is infringed on "a massive scale", according to the record labels.
The search for evidence has hindered Justice Wilcox's efforts to review the mountain of evidence and deliver a verdict quickly.
"I've been anxious to set out on this journey for some time," he told one barrister.
"Would you give me my backpack so I can start?"
The last couple of days of the week were dominated by arguments about admissibility of evidence.
With all evidence heard, both sides will make final submissions on March 22.
Justice Wilcox said he had wanted to resume the case earlier, but couldn't due to both sides' availability.