Mufin Music Player using Firebird
The free mufin player is the first media player to know the actual sound of your music collection to let you discover, manage, and listen to your music better. The mufin player helps you discover new music easier, create playlists automatically, or repair MP3s – and much more, of course!
This article says that Mufin is using “”Firebird SQL-Server Magix Edition” (huh?!).