While studying Business and Economics at the Bocconi University of Milan in 1974 Rasini founded a private radio station.  In 1978 he joined Telemilano 58, the small local tv station founded by Silvio Berlusconi; the start of the media empire, Mediaset.

In 1990 Rasini joined Telepiù, the first pay TV in Italy, as manager and shareholder with nine other associates.

In the period in which he was CEO, from 1994 to 2002, Telepiu' launched the multichannel digital satellite pay television. In those years Rasini was one of the promoters of the revolutionary proposal of football on television which has changed the lives of millions of Italians in the last 15 years: Telepiu’ was the first broadcaster in Europe to produce and transmit simultaneously all the matches of a single championship day in the Italian Serie A and Serie B.

In September 2003 he left the Sky group and joined Piero Crispino to start 3zero2, which was acquired by EMG in 2010.