GOM player is one of the famous player.It supports a mant type vedios and audio formats like mp4, mp3, 3gp It also support the HD videos.
Sound of the vedio is always clear.I am using this software from long time.I never face any problem using it. I download it from the cnet.com web site for free.
The installation is very easy. We can edit vedio using this software .We can crop the video as well as we can capture the photos from the video at the time of running the video.We can select multiple videos and it gets play one after one its own.finally.I am very happy using this software and my friends also use this software.