Metadata update

[jblsmith]

Need to update metadata files to reflect changes to database.

[grrrr]

Not sure if this is related, or independent: For the following files, the annotation duration differs from the one given in the metadata.
1499: duration difference to metadata duration: 12.775
758: duration difference to metadata duration: 5.557
731: duration difference among annotation variations: 0.887
731: duration difference to metadata duration: 1.507
1327: duration difference to metadata duration: 217.000
1367: duration difference to metadata duration: 87.216