>> s.metadata
=> #<Metadata id: 1, sound_id: 8, title: "no title", copyright: nil, year: nil, artist: "eK", description: "here is description", link: nil, sound_category: "Blues", created_at: "2009-11-03 03:57:02", updated_at: "2009-11-14 06:34:17">
>> s.metadata.update_attribute(:year, Date.today.year)
=> true
>> s.metadata
=> #<Metadata id: 1, sound_id: 8, title: "no title", copyright: nil, year: nil, artist: "eK", description: "here is description", link: nil, sound_category: "Blues", created_at: "2009-11-03 03:57:02", updated_at: "2009-11-14 06:34:17">
>>