SEATTLE — Internet radio was supposed to squash small FM music stations like KEXP. Someone forget to tell that to KEXP, the little station that has helped start the careers of big music acts like the Lumineers and Macklemore and Ryan Lewis.

Last week John Richards, the morning D.J. at KEXP, walked through the station’s gleaming new headquarters not far from the Space Needle. It is a $15 million project intended to further the station’s evolution into a brick-and-mortar music programmer for the Internet age.

As workers put the finishing touches on the soaring public performance space near the building’s entrance, Mr. Richards pointed to a corner that will eventually have a cafe and another that will house a record store. A large soundproof window provided an aquarium-like view into the booth that Mr. Richards and other D.J.s will begin broadcasting from next month.

“It’s like ‘Star Trek’ in here,” Mr. Richards said, inspecting the electronic consoles, microphones and computer displays inside the booth.