My first bet would be on gst-launch. Don't use enigma, just start gst-launch on boot. You'll need some extra gst plugins, hopefully already included in the feed. Remember to set the video output to dvbvideosink and the audio output to dvbaudiosink or the alsaink. The challenge is to find the right plugins and to construct the right commandline for gst-launch.
Some examples for rtp streaming: http://cgit.freedesktop.org/gs…d/tree/tests/examples/rtp
Searching for plugins: ipkg list "*udp*" and: ipkg list "*rtp*"
I can't help you any further though, but I hope this will give you a kickstart.