SFX Entertainment, the company led by the media executive Robert F. X. Sillerman, has agreed to buy the music download site Beatport, part of the company’s plan to build a $1 billion empire centered on the electronic dance music craze.
Mr. Sillerman declined on Tuesday to reveal the price. But two people with direct knowledge of the transaction, who were not authorized to speak about it, said it was for a little more than $50 million.
Beatport, founded in Denver in 2004, has become the pre-eminent download store for electronic dance music, or E.D.M., with a catalog of more than one million tracks, many of them exclusive to the service. It says it has nearly 40 million users, and while the company does not disclose sales numbers, it is said to be profitable.
"The electronic dance music craze."