It has more options, but can integrate with Overdrive, so not a solution
to the immediate problem.
..The Palace Project enables libraries to serve content to patrons from all the major e-content providers, including the Palace Marketplace, the only non-profit, library-centered ebook marketplace. The Palace Project also integrates with existing content providers your library might have an existing relationship with, including OverDrive, Baker & Taylor, Bibliotheca, and BiblioBoard.
josh