Thanks for the reply. I tried using MPEGStreamclip, but I get an error message saying that it cannot open the file because the file is not supported. So I tried Compressor and I am able to convert the clip, but I still get no audio in Final Cut Pro X. I have tried nearly all the settings, but still no sound. I am new to MAC and this application. Is there a recommended setting to use? Unfortunately I have multiple hundreds of clips that I have to convert. I have had some success using Quick Time Pro 7, but that is one at a time. I like the ability to be able to batch them in Compressor if I could get it to work.