From the announcement:
OverDrive has expanded on-the-go access for library patrons with the beta release of an audiobook app (mobile version of OverDrive® Media Console™) for BlackBerry®. Popular devices like the BlackBerry Storm™ and BlackBerry Curve™ can now be used to download MP3 audiobooks from your library's digital collection anytime, anywhere.The audiobook app for BlackBerry® joins the mobile suite of apps that are already available for Windows Mobile® and Android™ devices. To download an audiobook app, users can visit http://www.overdrive.com/software/omc.
For all audiobook apps, mobile phone users will visit a mobile-optimized version of your website, then browse the collection of MP3 audiobooks, download a title directly to their phone, and enjoy listening immediately. These audiobook apps (OverDrive® Media Console™ for mobile devices) provide the same superior audiobook experience as OverDrive's desktop software. Users can navigate downloaded parts using MediaMarkers™, create bookmarks, and resume from the last point played. Audiobooks from the library automatically expire so there are never late fees.