Rdio meldete am Montag Insolvenz an. Die jetzt veröffentlichten Details lesen sich…verheerend: The bulk of Rdio’s revenue came from its $9.99 per month subscriptions. The company took in $1.5 million per month there. Advertising only accounted for $100,000-$150,000 per month.That was dwarfed by the nearly $4 million in monthly operating expenses, including payroll for 140…