A cache of intercepted telephone calls, the audio of which has now been released for broadcast, offers a glimpse into the experiences and personality of the man believed to have recruited dozens of Australian men to fight in Syria.

The calls were presented as evidence during the trial of Hamdi Alqudsi, who was on Tuesday found guilty of aiding men to fight in Syria's brutal civil war, but they were not able to be played outside the court until after the jury had delivered its verdict.

In one phone call with Alqudsi, made in June 2013, Baryalei explains that a bullet came so close to him it made his ears ring and describes how he saw his "commander" die.

"We were on the road and he jumped and we were looking at him, as we were looking at him, as we were looking at him, we just saw the bullets go straight through him," Baryalei says in the call.

When asked how that made him feel, Baryalei replies: "I don't know man. I was confused. I was, at one bit, I started crying because I ... I just saw him. He was, like, giving, like you know, he was just taking breaths."

The same call ends with an emotional Baryalei struggling to find words.

"I don't want to be here man," he says. "I'm over it. I'm over it. Why would you wanna live this rubbish for? ... I don't know bro, it's the end, you know how they say, end of the world, bro, it's the end of the world."

Baryalei, a former Kings Cross bouncer and extra on Underbelly: The Golden Mile, was a leader in "Street Dawah" movement in which members proselytised on the streets of Sydney. He allegedly also conspired with a Sydney man to behead a random stranger.

He initially started fighting with the al-Qaeda-affiliated group Jabhat al-Nusra, but switched over to its rival, Islamic State.

The calls provide a hint of his discontent with Jabhat al-Nusra, as Baryalei complains to Alqudsi of men smoking on the frontline, lacking religious commitment and not fighting well.

"You can't be with people like that, man," Alqudsi says.

"That's what I'm saying, man, as long as people like that are around, how are you meant to win though?" Baryalei says.

Less than two months after the conversation, Baryalei tells Alqudsi that he's "swapping over" to the "[Islamic] State".

"They gonna give us ... they're gonna give us our own um, the brother promised me, he said, 'Look, I'll give you your own headquarters.' Allah willing. So, brother there's plenty of room for you."

Baryalei is believed to have died in 2014.

The calls also shed new light on how Australia's wanna-be jihadists prepared for their trips to Syria, and their experiences crossing the border from Turkey into the war-torn country.

Alqudsi tells Amin Mohamed, who was found guilty of trying to go to Syria to fight after being stopped at Brisbane Airport in 2013, to SMS him saying "hamdullah", or thank god, when the doors on his flight were closed.

"What I want you to do, don't waste time. Don't waste time. I want you, from Melbourne, to book a ticket and go," Alqudsi tells him.

"OK perfect, perfect. When can we talk about the details of where we need to book it to? Do we need to book it to the Ottomans or elsewhere?" Mohamed replied.

"You can book it direct because you don't have a red flag on you, and the brothers don't have a red flag on them."

In another call, Alqudsi tells a crying man, identified only as Abu Dajana, that "you will be one of the first ones to go".

"I prefer for you to go than any of the brothers. I believe in you spiritually," Alqudsi says.

Hundreds of intercepted phone calls, text messages, WhatsApp and Skype conversations were presented as evidence during Alqudsi's trial.

Alqudsi, 41, who has been described as the "principal player" in the network sending men to Syria, is due to face a sentencing hearing next month.

Hamdi Alqudsi helped these men plan to go to Syria

The "brothers"

Tyler Casey
Also known as: Abu Qaqa​, Yusuf Ali
Casey and his wife, Amira Karroum​, who lived in Granville, are believed to have died when they were shot by a rival Syrian rebel group in Aleppo in January 2014. Born into a large Christian family in the United States, Casey converted to Islam as a teenager. Casey left for Syria in mid-2013, while Karroum joined him in January 2014.

Caner Temel​
Also known as: Abu Moussa
Temel, 22, from Auburn, was reportedly killed when he was shot in the head by a rebel sniper while fighting for Islamic State in January 2014. He left Australia in mid-2013, meeting Baryalei who was already fighting in Syria. Temel had joined the Australian Army in 2009, but was discharged in 2010 after going AWOL.

Mehmet Biber
Also known as: Abu Abdul Malik​
A western Sydney resident, Biber allegedly left Australia in July 2013, before making his way to Turkey's Bab al-Hawa border and crossing into Syria. Earlier this year Fairfax Media revealed that Biber had returned to Australia, although he has claimed he did nothing wrong in the Middle East and returned home just weeks after he allegedly left.

Muhammad Abdul-Karim Musleh​
Also known as: Abu Hassan
Musleh allegedly left Australia in mid 2013, crossing the Turkish border into Syria alongside Casey, Temel and Biber. He arrived back in Australia about 10 days later, with Alqudsi describing his return as a "catastrophe" in an intercepted phone call played to the court.

Abu Alim​
Abu Alim, whose real name is not known, told Alqudsi that he had crossed the border into Syria in July 2013. "When we were crossing the border, I mean, there were gunshots and, praise be to Allah, on top of us and it was beautiful," he said in an intercepted phone call played to the court. His fate is not known.

Amin Mohamed
Also known as: Abu Bilal​
A New Zealand citizen who had been living in Melbourne, Mohamed was charged after he was stopped at Brisbane international airport in September 2013. He pleaded not guilty to three counts of preparing to enter a foreign state to engage in hostile activities, saying that he wanted to move to Syria to help people. He was found guilty by a Supreme Court jury in October 2015, and is being held in an immigration detention centre until his expected sentencing hearing later this year.

Nassim Elbahsa
Also known as: Abu Bakr
The whereabouts of Elbahsa are not known. The court heard that Alqudsi received a picture of Elbahsa and Biber together in October 2013. Biber, who sent the image, referred to Elbahsa as the "brother u sent to us jst now" and said he was considering bringing his family over to join him. "Ye he gna try n get all of them to come God willing ... They dnt have any issues with muhajireen bringing family here," Biber wrote.