[Karellen]

I'd like to have a category in movies that is a filter by languages.

The values have to match what is used in the database.
FRENCH is not used, but fre is
SPANISH should be spa

If you are not sure, you can always check the streamdetails table in the database.

https://en.wikipedia.org/wiki/List_of_IS...uage_codes

[glattering]

Thanks for your quick reply about the languages.
I added the tags to the database myself, because I have files that have several audio streams and I don't think the scanner detects automatically the audio streams to add a tag for every language contained in the file.
Anyway, that is not my issue, since you could consider any subset of already existing tags.

[Karellen]

I added the tags

Sorry, I didn't look at your rule.
Try creating this same node using Smart Playlists. When you get it working to your satisfaction there, then check the xml file for the code and modify your node.