4th Generation iPod Nano plays the following Audio formats:
AAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, WAV, and AIFF.
4th Generation iPod Nano plays the following Video formats:
H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second,
Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats.
I use dbpoweramp for ripping and conversion(configurable to encode in multiple formats and put those files in different places on your computer) for all of my own personal stuff on my computer.
To rip friends stuff that's always got a small scratch here or there(or heavily scratched it doesn't matter) I use CDex exclusively because (maybe it's me or my computer/drive) I never ever get satisfactory results using EAC or dbpoweramp or any other program I have tried to use to rip a scratched cd. I usually convert to 128 because no-one cares what it sounds like, they just want thier music from thier cds put on thier digital player.
Edited by digger945 - 6/30/10 at 2:21pm