I’m happy to announce you that the latest version of Amarok for Mandriva 2007 now feature a fully functionnal MusicBrainz ! Look at the screenshot for evidences.
This build, named amarok-1.4.4-3, is exactly the same as previous one (i.e. with SQLite, MySQL and Postgresql support). Don’t forget to update the libtunepimp package from my repository and use the 5.0 version.