Directly from the post above. "You can then File->Import CCF into the editor to make a config (PCF file)."
To be "crystal clear"...
1. Unzip the file you downloaded to get to CCF file. 2. Open ProntoEdit NG and then select File->Import CCF 3. Save file as a PCF. 4. Open your PCF. 5. Merge the PCF from step 3 into your PCF by selecting File->Merge Configuration 6. Add links to the new IR code buttons as needed.