Since mad was packaged recently (see bug 1396139), it's possible to add Mp3 decoding back. Please consider reenabling support for Mp3.
sonic-visualiser-freeworld is already marked as retired in RPMFusion , please add BR: libmad-devel to spec . Thanks.
sonic-visualiser-3.0.3 is available https://bugzilla.redhat.com/show_bug.cgi?id=1274283