Birdman. Dame Dash. Jermaine Dupri. Snoop Dogg. They've spent the last 20 years making hits, stars and headlines, as well as laying the foundation for some of today's biggest acts. Although they've sold millions of records and taken the risks to live the life of a mogul, not every calculation yields the desired return. Over eight 60-minute episodes, this hard-hitting docu-series takes you into their lives as each entrepreneur navigates both familiar and new territory - from…