Online marketing and widget development firm Nabbr has raised $2.57 million in its latest round of funding, peHub reports. Previous investors Allen & Co. and Avalon Ventures participated in the round, though we could not confirm whether there were additional investors. Chicago-based Nabbr has raised money from a number of different sources, including record label S-Curve, and private investors like Rocket Fuel founder and CEO Michael Wolfson. Previous funding amounts were not disclosed. The company seems to be diversifying from its roster of music-focused widgets, to developing apps for all kinds of entertainment properties. Recent projects have included widgets for films like Universal’s Mamma Mia and Paramount’s Iron Man.