Libpdmp is a project to write a library that supports transfering files to and otherwise exploiting the features of as many (hardware) MP3 players as the authors can get their hands on.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.