XBMC Content Type

I have started adding ripped music DVDs to my XBMC library. If they go into my movies collection with IMDB set as scrapper it pulls in all the correct details but I would like to have their content type as music video in which case the scrappers associated with this content type don’t pull in the correct details. Is it possible somehow to set content type to music video but use IMDB as the scrapper? Thanks.

 ...And, as a related question, is there ANY facility to input custom (user) data, or even keywords into the descriptions?  If no, is it something others are looking for, or is it just me? 

The context menu usually shows the options available for the scraper. Some skins (confluence) also let you specify default scrapers.