Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Forced to use preprietary software playing video files with sound

I got this camcorder yesterday. After taking some video images, I transferred the files to my PC and renamed the file extension from "MOD" to "MPG". It turns out that there is no audio playing the recorded video files using Microsoft Media Player 10. My Studio 8 software also failed to "initialize the audio file". To listen to the audio, I have to use the "Power DVD 5" or "CyberLink PowerDirector Express" came with the camcorder. As we all know that the video image software came with the camcorder is very limited. To do anything meaningful, I have to buy their upgrade. So far, I could not find a way to convert the MPG files to a compatible format so that I can play and edit them in Studio 8 or Media Player. For this reason, I'm going to return the camcorder to the vendor soon.