During March 2026, Lou Sando enhanced audiobook handling in the jellyfin/jellyfin repository by expanding format recognition to include .m4b, .m4a, .aac, .flac, .mp3, and .opus files. Working in C# and leveraging backend development and media server management skills, Lou improved the accuracy of audiobook classification and ensured alignment with documented supported formats. The changes addressed mislabeling issues, resulting in better library organization and easier discoverability for users with diverse audiobook collections. All modifications were traceable to specific commits, reflecting robust code-quality practices and effective open-source collaboration. Lou’s work demonstrated depth in extension-based format recognition and backend systems.