Spotify has bought another audio platform, and this time it's hoping to bring radio into the modern era. The streaming company has acquired Whooshkaa, an Australia-based firm that offers a tool to convert radio broadcasters' shows into podcasts. Spotify plans to integrate the tech into its Megaphone suite for podcasters with a clear goal -- stations could further profit from shows by offering ad-supported podcast episodes. Whooshkaa might also boost some of Spotify's other efforts. Founder Rob Loewenthal noted Whooshkaa also had speech-to-text (and text-to-speech) technology, smart home integration and "enterprise grade" podcasting tools.