- tag
  - id
  - name (ignore case)

- source
  - id
  - path
  - type
    - audio
    - series
    - movie
    - other
  - name
  - description
  - season
  - episode

- clip
  - id
  - .source_id
  - path
  - type
    - audio
    - video
    - image
  - name
  - description

- item
  - id
  - .clip_id
  - .tag_id