Recently we've instructed how to translate DJ-Catalog2 parts editing language files.

This time, answering your translation questions I'll show you how to do it without FTP access.

We'll be using Localise extension available on JED.

1. download and install the Localise extension
2. open the extension in your backend and click the "Translations" Tab 
3. select language, type and client from the select boxes to narrow the search 
4. click DJ-Catalog2 extension name 
5. edit the translation and save

You can also find the article on how to translate DJ-Catalog using language files here.