josh greenberg formed grooveshark ’s service let users upload songs and made them available “ he was excited about potential new things that he was going to start , ” she said . greenberg and sam tarantino , both from the tampa area , founded grooveshark as josh greenberg , co - founder and cto of legally embattled music - streaming site grooveshark , was found dead sunday evening in his gainesville , fla. , home , according to police . lori greenberg , told the gainesville sun . grooveshark co - founder josh greenberg , a pioneer in gainesville 's student startup movement , was found dead in his bed sunday evening by his girlfriend in the house they shared . according to the police report , she last spoke to him at 1:30 a.m. sunday and called authorities around 7 p.m. after returning home with two friends . lori greenberg , his mother , said monday she was told by police who investigated sunday night that there was no evidence of injuries or drugs .