An idle afternoon has led to progress. I installed just the libraries from the debian PPc version of libogg, libvorbis libFlac and have made progress.
Syslog shows the foollowing:-
May 31 16:36:15 BIGBOY mt-daapd[987]: Firefly Version svn-1586: Starting with debuglevel 2
May 31 16:36:15 BIGBOY mt-daapd[987]: Plugin loaded: ssc-script/svn-1586
May 31 16:36:15 BIGBOY mt-daapd[987]: Plugin loaded: rsp/svn-1586
May 31 16:36:15 BIGBOY mt-daapd[987]: Plugin loaded: daap/svn-1586
May 31 16:36:15 BIGBOY mt-daapd[987]: Starting rendezvous daemon
May 31 16:36:15 BIGBOY mt-daapd[987]: Starting signal handler
May 31 16:36:15 BIGBOY mt-daapd[989]: Error: enum_begin failed (error 1): Misc SQL Error: no such table: config
May 31 16:36:15 BIGBOY mt-daapd[989]: Can’t get db version. New database?
May 31 16:36:15 BIGBOY mt-daapd[989]: Initializing database
May 31 16:36:15 BIGBOY mt-daapd[989]: Error: enum_begin failed (error 1): ?
May 31 16:36:15 BIGBOY mt-daapd[989]: Error: enum_begin failed (error 1): ?
May 31 16:36:15 BIGBOY mt-daapd[989]: Full reload…
May 31 16:36:15 BIGBOY mt-daapd[989]: Starting web server from /mnt/array1/firefly/usr/share/mt-daapd/admin-root on port 3689
May 31 16:36:15 BIGBOY mt-daapd[989]: Registering rendezvous names
May 31 16:36:15 BIGBOY mt-daapd[989]: Error: enum_begin failed (error 1): Misc SQL Error: no such table: songs
May 31 16:36:15 BIGBOY mt-daapd[989]: Error getting song count: Misc SQL Error: no such table: songs