Baltimore rappers have been getting some well-deserved national ink of late. Chief among them is the group Peso Da Mafia, whose hit from last spring, “Money Man,” and its prompt to do the Money Dance, blew up, pulling in 3.4 million views on YouTube, 586,000 SoundCloud plays, a co-sign from Orioles center fielder Adam Jones, and the honor of being named Song of the Year by the Baltimore Beat.