Paloma is a program to manage an SQL database of digital music files, and facilitate their retrieval and playback in interesting ways. It works with music files of any form -- MP3, Ogg Vorbis, MIDI... whatever you've got a player for. Paloma makes it easy to rip your entire CD collection and store it on your hard disk (or a collection of CD-Rs) for instant random access; playlists can then be generated using arbitrary SQL commands.
MySQL Administrator is a powerful visual administration console for MySQL, which allows the user to easily administer their MySQL environment, and gain better visibility of how their databases are operating. It is available with native GUI interfaces for Windows, Linux, and Mac OS X.
C-Cramp (the C-Cramp College Radio Audio Management Program) is a Web-based frontend to MySQL for managing the types of things that small radio stations might need: audio files, data, and "metadata"; DJ and staff information, schedules, live music and program logs, and all sorts of other data. Currently, a cross-platform PHP application is the focus of the project, but more features and types of programs are planned that will hopefully enable easier playback, storage, loading, and entering for all types of applicable data.
hiberlite provides C++ object-relational mapping for SQLite 3. Its design and API are inspired by the Boost.Serialization, which means there is almost no API to learn. In contrast to most serialization libraries with SQL serializers, C++ objects mapped with hiberlite behave similar to active record patterns: you are not forced to follow the "read all your data/modify some small part/write everything back" path. It is for people who need reliable data storage, ACID transactions, and simple random access to their data files, and don't like coding in SQL.