sync audio and video

FFmpeg is a very fast video and audio converter.

Capture your screen and record audio to produce a flash video (FLV)

Play most popular media formats : dvd, video, audio, mp4, mp3, cd, flash, etc.

It allows you to add or remove video and audio codecs and plugins

Stream Audio/Video and web pages via the soundcard with a radio transmitter

Plays Almost All Video & Audio Files with No Extra Codecs Needed: For Free!

Burn or Rip video, audio, data CDs, DVDs. Back up all your music, data files.

F*ing Good Media Center is a multiplatform audio/video player.

Watch DVDs and play audio, video, and image files.

The JW FLV Player is an easy and flexible way to add video and audio.