About IRRECO capabilities, I wonder if it is possible for N900 to control toy robots working on IR, like Robopet, Robosapien, etc.

For this purpose, N900 (with IRRECO) should work as an infrared transmitter/receiver with the robot. Therefore, it will be possible not only to give orders/commands to the robot, but also programming it via N900, allowing i.e. voice commands.

To this aim, there is a free, open source program hosted on SourceForge, called Robosapien dance machine or Robodance by which you can control your Robosapien/Robopet using just your voice. Currently this software uses the USB UIRT infrared transceiver to talk to the robot. It should be interesting to know if it can support other infrared devices, like N900.