rss feed for categories with subcategories

Is there a way to display an rss feed for a category and its subcategories? I have an onlinemagazine with about 20 - 30 categories all within my magazine-category that doesn't have any articles itself:
Magazin (0 articles)
--category 1 (20 articles)
--category 2 (0 articles)
----category 2.1 (10 articles)
----category 2.2 (12 articles)
--category 3 (5 articles)
etc...
How can I create an rss-feed over my complete magazine-category (with parameters like the latest 30 articles, only intro text, no html etc...)
Joomlas built in feed component doesn't seem to work here, I cant select a cagegory there. Ninjarss shows empty feeds and Foobla seems quite expensive.
I managed to create a feed output when I appended /index.php?format=feed&type=rss to my sites' url but this gives me the whole articles with images and only as many as there are displayed on my frontpage.
Regards

bump... doesn't anyone have an idea?

Foobla seems to be the only choice, but I've never seen it.
I'm currently working on my third Flexi-site and RSS is missing on all of them yet. Maybe I'll give Foobla a try once I finish this one.
I usually use NinjaRSS.

Would be great to have it very configurable, like the module.

Idea: just render Flexi-module output to a rss component.
I mean, it would be a convenient way to make a module in some pseudo position, or take an existing module, and render it into a rss view.

How about modifying NinjaRSS default view, to optionally render just from Flexi-module positions, instead of ->content; in its view. Would that work?

@horsey,
I bought foobla last week but there are problems.
I'm in contact with their support to straighten this out so you might want to wait a bit before you buy it
I'll report on how obrss works together with flexicontent.

We are using obrss and it is working well on our site, have a look here

www.energymag.be

There are 3 feeds (1 in french, 1 in dutch and a bi-lingual one on a hidden link).

The FC version is still 1.5.4 maybe problems comes from new version of FC.

I have very strange results here where obrss creates very strange urls:
usually FC urls are something like domain.tld/category/category-id-category-slug/item-id-item-slug
but with obrss I get:
domain.tld/editors-name/item-id

.
Hmmmm . . . moving to Feature Requests forum.

What is needed is separate settings for the RSS feed.

Currently the items listed in the RSS feed "use the same query" as the display.
So I thought it may be possible to add an IF or two in the category model.
BUT it appears to be a bit more complicated.

It appears that currently a few different settings affect what items appear in the feed:
- showing sub-categories
- layout used
- pagination settings
Did not expect layout and pagination to affect the feed items displayed.

Many users do not want to display all sub-category items in the main category.
But they do want the items from the sub-categories in the RSS feed.

So what is needed is some separate settings for the category RSS feed:
- show sub-categories
- number of items to show in the feed
- ordering
- ? ? ?

Any other ideas/comments?


.

This is how we set up our sites,

These are FC categories with example:
levels:category:example

1st: FlexiConentWebsite (The name of the client)
|_2nd: Components
|__3rd:Flexicontent
|___4th:1.5
|___4th:2.5
|_2nd: Extensions
|__3rd: 1.5
|__3rd: 2.5

Has you can see, EVERYTHING is under one FC category and this is on purpose, the 2 main reasons is for FlexiAccess this way we can control the ACL and the 2 reasons is to have a category that has a list of all articles, why? so we can have an RSS with all articles and the homepage can also have a list of all articles. Also we create a hidden link to our client to have list of all articles to be easy to update them.

Hope this helps.