Nicholas Tanner, who co-founded the three-day event in Wymeswold, Leicestershire, that attracts more than 10,000 fans each year, was told by a judge his behaviour was “disgusting and vile”.
The 44-year-old was arrested after the police executed a search warrant at his home in March last year.
When he met them on his doorstep he admitted he had indecent images on his computer.
But he answered no comment in police interviews, and told a probation officer that he had accessed the images because of empathy with the victims due to a bad childhood experience
Tanner pleaded guilty to five counts of possessing indecent images of children, mainly featuring sexual video clips of girls, aged between seven and 14.
Neil Bannister, prosecuting, told Leicester Crown Court that Tanner had downloaded illegal images in the most serious bracket, category A, of which 44 were movie clips showing the rape or torture of young children
Tanner, of East Road, Wymeswold, was given a nine month jail sentence, suspended for two years, with a 10-day rehabilitation activity requirement.
He was ordered to carry out 200 hours of unpaid work.
Tanner’s address will be on a sex offender register for a decade.
He was placed on a 10-year sexual harm prevention order, which also enables the authorities to monitor his future computer use.