Joshua Greenberg, the 28-year-old co-founder of music streaming website Grooveshark, has been found dead at his home in Gainesville, Florida.

Mr Greenberg was found on Sunday evening, just weeks after his business closed down after a row with major labels over its failure to secure the rights to music on its website.

There was no evidence of foul play or suicide at the scene, Gainesville police said on Monday.

The Gainesville Sun newspaper reported on its website that Greenberg was found in his bed by his live-in girlfriend.

His mother, Lori Greenberg, told the paper that an autopsy found no cause of death pending toxicology testing which could take several months.

"He was excited about potential new things that he was going to start," Ms Greenberg said. "[The medical examiners] are as baffled as I am."

Florida-based Grooveshark, which had some 35 million users of its music streaming service, ceased operations on April 30 as part of a settlement with major record labels over copyright infringement.