Introduction to indexing and retrieval of non-text information- -- Part I: Literature reviews and theoretical frameworks -- Chapter 1. Precedent or preference? The construction of genre and music recommender systems -- Chapter 2. Multilingual taxonomy development for ordinary images: Issues and challenges -- Chapter 3. Access to editorial cartoons: The state of the art -- Part II: Information behaviour studies -- Chapter 4. Information behaviour and music information retrieval systems: Using user accounts to guide design -- Chapter 5. Seeking what we have yet to know: A user-centred approach to designing music knowledge platforms -- Chapter 6. Searching for music: End-user perspectives on system features -- Chapter 7. A user study of moving image retrieval systems and system design implications for library catalogues -- Part III: Empirical knowledge organization studies -- Chapter 8. An exploration of tags assigned to geotagged still and moving images on Flickr -- Chapter 9. Exploring the effectiveness of ontology based tagging versus free text tagging -- Chapter 10. That obscure object of desire: Facets for film access and discovery -- Chapter 11. Designing and visualizing faceted geospatial ontologies from library knowledge organization systems -- Part IV: Case studies -- Chapter 12. Subject indexing of images: Architectural objects with complicated history -- Chapter 13. An image based retrieval system for engineering drawings -- Chapter 14. Emotion felt and depicted: Consequences for multimedia retrieval -- Chapter 15. The critical role of the cold-start problem and incentive systems in emotional Web 2.0 services -- Chapter 16. Non-textual information in gaming: A case study of World of Warcraft -- Index.