iPod with Video

• Apple's iPod with video -- also called the fifth generation iPod -- can play music, videos and pictures. If you are using iTunes version 6.0 or later, your fifth generation iPod can play all videos files available through iTunes. This includes .mov, .m4v, and .mp4 files. All music files available through iTunes will also work on the fifth generation iPod, including MP3, AIFF, uncompressed WAV, AAC, and Audible files. Additionally, you can view images with .jpg, .tif, .gif, .bmp, .png, .sgi and .psd file extensions.
  
  

iPod Nano and iPod with Color Display

• Apple's iPod Nano and iPod with color display have the same music playing and image viewing capabilities as the fifth generation iPod; the only difference is that these iPods do not have a video screen, meaning you will be unable to view video files on this gadget. As long as your Nano is using iTunes 4.9 or later, you will be able to listen to MP3, AIFF, uncompressed WAV, AAC and Audible music files and view JPEG, TIFF, GIF, BMP, PNG, SGI and PSD image files. The iPod with color display can also display all the above files, but must use iTunes 4.7 or later.
  
  

iPod Mini, Shuffle and Monochrome Display

• Apple's iPod Mini, Shuffle and monochrome display models only play audio files -- they do not play video files, nor can they display image files. If you are using iTunes version 4.7 or later, your Mini can play MP3, AIFF, uncompressed WAV, AAC, and Audible files. You can play the same audio files on your Shuffle and monochrome display models, but must run them in conjunction with iTunes 7.0x and and iTunes 4, respectively.
  
  

Incompatible Files

• Apple's iTunes and iPods can play a wide variety of audio files, but is still incompatible with some codecs. These incompatible files include snd, MP1, MP2, QuickTime, compressed WAV, WMA and protected WMA files.