Klaas Haytema, 30, pulled the plug on the late-night broadcast, which was relaying a Buddhist sermon, because it was disturbing his sleep.
He told the court that he had been unaware a religious service was taking place near his hotel in Mandalay.
Several foreigners have recently fallen foul of strict laws in Myanmar that protect Buddhist ceremonies.
Delivering the ruling, a judge said Haytema was "clearly guilty" of insulting religion and was "sentenced to three months imprisonment with hard labour".
But he avoided another three months after opting instead to pay a fine of 100,000 kyat ($80) for violating the terms of his visa, which requires tourists to respect local customs.
Haytema, who was also accused of insulting Buddhism by not taking off his shoes when he entered the prayer hall, apologised during previous hearings, according to local media.
Slights against religion are treated with extreme seriousness by the courts and a pious public in Buddhist-majority Myanmar, previously known as Burma.
In July, a Spanish tourist was deported after monks complained about a tattoo of Buddha on his leg, while last year a New Zealand bar manager spent 10 months in jail for "insulting religion" by using a Buddha image to promote a cheap drinks night.

The Health Protection Agency (HPA) report said a hot tub on show at JTF Warehouse in Stoke-on-Trent was the probable source of an outbreak in 2012.
Richard Griffin, 64, and 79-year old William Hammersley, both died and 19 other people caught the disease.
The HPA said hot tubs posed a health risk if not regularly maintained.
BBC News has not been able to contact JTF Warehouse for a comment following the HPA report.
The report said: "This was a significant outbreak and has raised questions on the acceptability of operating spa pools (also known as whirl pools and hot tubs) in public places where the general population has access.
"Spa Pools are known to pose a risk of Legionella if water systems are not rigorously maintained, properly managed and subject to regular chemical controls.
"Operating spa pools on display in indoor spaces, even if not used for bathing, have been previously shown to be the cause of outbreaks in other countries," the report added.
Lawyers Irwin Mitchell are taking legal action on behalf of the families of two men who died, as well as 16 other people who caught the disease.
They are calling for a public inquiry into the outbreak.
Clive Garner from the firm said: "We hope that now this report has been published those responsible for the store will admit liability for the illness suffered by our clients so that we can help them to access the exact level of care and support they now need.
"We are currently working with medical experts to investigate their longer term condition and prognosis and we hope to conclude their cases as soon as possible so that they can begin to move on with their lives."

Manchester City Council used a crane to remove the 44ft (13.5m) trailer, which had sunk into the road surface in South Street, Openshaw.
The cost of removal and disposal was almost Â£10,000.
Councillor Nigel Murphy said the people who dumped it had "stolen from Manchester taxpayers".
The trailer, which weighed double the legal limit, had been stripped of usable parts and scrap metal, as well as all its identifying features, such as registration plates.
Mr Murphy said investigators suspected the waste had "come from a site used to sort skips".
A council spokesman said it was hoped "someone working in logistics" would recognise the vehicle, which was described as "an old tri-axle steel waste hydraulic ejector trailer".
A Dutch man wept as he was jailed for three months with hard labour in Myanmar for unplugging a loudspeaker.
[NEXT_CONCEPT]
Rules on displaying hot tubs in shops and public places should be reviewed, according to a report into a fatal outbreak of Legionnaires' disease.
[NEXT_CONCEPT]
A trailer filled with 90 tonnes of domestic waste was dumped on a street in an act of "fly-tipping on an industrial scale", a council has said.