Elecard NWRenderer streams the incoming data and will stop streaming as soon as there is no data to be streamed. Streaming in a loop can be implemented in 2 ways:
1) restart data sending (shown in NWServer sample application (position sets to 0 and the graph restarts))
2) use a special source filter which sends data continuously.
The version of File List Source filter that is provided in Elecard SDK does not have such functionality, so I recommend your contacting our sales
to enquire on any custom versions available that is able to meet your needs.