Hi, guys. I found a nice mp3 builder "eSan MP3 Builder" at WareMax.net. It is pretty cool. I ever tried Ace-High MP3 Recorder, but I am not satisfied with it. Compared to Ace-High MP3 Recorder, eSan MP3 Builder is easier to use and has a better interface. Moreover, it is amazingly faster than Ace-High MP3 Recorder.