Media players can be classified into different types according to different criteria, such as the type of media they can play, the type of device they can run on, the type of software they are based on, etc. Some of the common types of media players are as follows: First, there are audio players, which can play only audio files, such as MP3, WAV, FLAC, etc. Examples of audio players are Winamp, iTunes, VLC, etc. Second, there are video players, which can play only video files, such as MP4, AVI, MKV, etc. Examples of video players are Windows Media Player, QuickTime, VLC, etc. Third, there are image players, which can play only image files, such as JPG, PNG, GIF, etc. Examples of image players are Windows Photo Viewer, IrfanView, Picasa, etc. Fourth, there are multimedia players, which can play multiple types of media files, such as audio, video and images. Examples of multimedia players are VLC, Media Player Classic, KMPlayer, etc. Fifth, there are portable media players (PMPs), which are devices that can play media files on the go. Examples of PMPs are iPods, Zunes, Walkmans, etc. Sixth, there are web-based media players (WBMPs), which are software that can play media files online. Examples of WBMPs are YouTube, Spotify, Netflix, etc.