We're getting questions regarding change of different parts of DJ-Catalog2.
Usually you ask how to change "Manufacturer/Producer" name to something different that suits your website needs.
That's really easy to do. Just follow this steps:
components/com_djcatalog2/language/en-GB(or other folder with your language. for example
COM_DJCATALOG2_PRODUCERentry to anything you like
You can also find the article on how to translate DJ-Catalog using Localise extension here.