NOTE: This code sample is not great, but it works.

Chirpy.ConsoleRedux.cs

using System;
using System.IO;
using Zippy.Chirp;
using Zippy.Chirp.Engines;

namespace Chirpy.ConsoleRedux
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var findPath = ".";
            if (args.Length > 0) findPath = args[0];

            var cssEngine = new YuiCssEngine();
            var lessEngine = new LessEngine();
            foreach (var extension in lessEngine.Extensions)
            {
                foreach (var filename in Directory.GetFiles(findPath, "*" + extension, SearchOption.AllDirectories))
                {
                    if (filename.Contains(".min.")) continue;

                    var text = File.ReadAllText(filename);
                    text = lessEngine.Transform(filename, text, null);

                    var minFileName = Utilities.GetBaseFileName(filename, extension) + lessEngine.GetOutputExtension(filename);
                    File.WriteAllText(minFileName, text);
                    Console.WriteLine(string.Format("{0} -- {1}", lessEngine.GetType().Name, filename));

                    var minText = cssEngine.Transform(minFileName, text, null);
                    minFileName = Utilities.GetBaseFileName(filename, extension) + cssEngine.GetOutputExtension(filename);
                    File.WriteAllText(minFileName, minText);
                    Console.WriteLine(string.Format("{0} -- {1}", cssEngine.GetType().Name, filename));
                }
            }

            //config file
            var configEngine = new ConfigEngine();
            foreach (var filename in Directory.GetFiles(findPath, "*" + Settings.ChirpConfigFile, SearchOption.AllDirectories))
            {
                try
                {
                    Console.WriteLine(string.Format("ConfigEngine -- {0}", filename));
                    configEngine.Run(filename, null);
                }
                catch (FileNotFoundException)
                {
                    Console.WriteLine(string.Format("File not found in config file={0}", filename));
                }
            }
        }
    }
}