Hello, i have downloaded RENOiSE 1.5 and try this util. It was very easy to understand working principe 
… But I have some question:
How to convert rns to mod or xm file format? What utility I need?
If there is no such apps or renoise functions. Where i can get file format description ,some units (c++, asm or pas) or dlls 
P.S. Sorry for bad English
At this time, there are not apps and there are also no File-Descriptions available. With Renoise 1.6 the whole RNS-Format will be XML-based and so, it should be very easy to write some sort of convertor.
Exporting to other formats is IMHO not possible…
damn it i was wondering this also 
Guess even if you could convert it, the target player would need to have access to all plugins you used, internal or external. That’s one of the reasons why DeliPlayer doesn’t support similar files from other trackers.