The valuation explosion we’ve seen in music rights is happening in another segment too, it seems: DIY distribution. In August, US-based DIY distribution platform DistroKid accepted an investment from Insight Partners, valuing it at $1.3 billion. Now, a rival to DistroKid, Steve Stoute’s UnitedMasters – has locked in its own princely valuation. Source: UnitedMasters valued at $550m, after raising