Hey there,

Unfortunately we do not have any xml file for integrate with Falang, it would be best if you can consult with Falang developer regarding this.

But you can use this method to make the categories to support multilingual, what you need to do is :
- Go to backend > Easydiscuss > category > select your category > set the title to language constant e.g. COM_EASYDISCUSS_CATEGORY_NEWS
- Then go to backend > extension > language > click override content > select the language (site) > translate this language string : COM_EASYDISCUSS_CATEGORY_NEWS

You can check my attached screenshot below.

Hope this help.