As Chris Rathaus, he formed the audio production companies MediAide and Studio C in Tampa.
During this time (late 1980's) he also worked as an adjunct professor at the University of South Florida (Main Tampa Campus) where he taught a class in audio production.
Rathaus moved to Beasley Broadcasting's WQAM Miami, and Clear Channel's WRMF-WJNO/West Palm Beach.
Becoming intrigued by new possibilities in changing technology, Rathaus left Palm Beach for the Internet radio start-up RadioCentral in San Francisco.
He was then hired at Sirius Satellite Radio, where he worked as a producer and helped expand their offerings to the unprecedented number they have achieved.