All Dune HD media player models can be controlled via IP Control (HTTP API to control various player functions via network).
Documentation on IP Control procotol (main features):
Documentation on some additional features available via an additional HTTP API provided by "remote-control" plugin:
Availability: IP Control is supported on all Dune HD models since 2009 (including models based on Sigma Designs SMP864x/SMP865x/SMP867x media processors), starting with firmware version 110127_2105_beta.