Well, I ended up with a real simple solution. I load the DMX-Rss feed with the Syndication-Api (from .Net), from there I can change/adapt it as I want. A simple snippet for loading:
private SyndicationFeed _LoadDmxRssFeed(string inputUri)
{
using (var xmlFeed = XmlReader.Create(inputUri))
{
return SyndicationFeed.Load(xmlFeed);
}
}
... where inputUri points to the DMX-Rss feed. Cheers.