It worked this time : the server file address was correct - however, what I think is that the "Autocorrect" in iPad was chaning the "xml" in the url finename to the uppercase "XML" - this time I took extra care to check the entry when I noticed the "correction".
My sincere apologies for the trouble - I should have been more careful (I think it was the feeling I had that Iomega used a Twonky!) and thanks a lot for the help.
One problem I have now is audio is video getting affected after a few minutes - I need to check that out.