Why can I transfer OverDrive titles directly to my iPod, or use these files on my Mac?
OverDrive titles, provided by OverDrive, Inc., use DRM protection technology from Microsoft Corporation. Unfortunately the iPod (and Mac) do not currently support DRM-protected Windows Media Audio (WMA) or Windows Media Video (WMV)files. OverDrive, along with hundreds of online digital media providers, is hopeful that Apple and Microsoft can reach an agreement that would enable support for Microsoft-based DRM-protected materials on the iPod/Mac.