mp3 has been a standard for some time now, but with the new codecs coming in, such as AAC and Ogg Vorbis also mp3 Pro. I have been watching these 3 for a few months now and I think AAC and Ogg Vorbis are the best ones. AAC is a nice format but licencing issues have already but a bad stain on it, but I think its the best codec out to date. Have VBR encoding at a low bitrate is amazing and the sound quality is incredible. Ogg Vorbis is probably my secound choice because its a basically the same as AAC and it has no licencing issues since its open source. Which is great in anyones language. But this codec is hardly being recognised. mp3 Pro is ok, I don't think it will take off anytime soon. It builds on an already dodgy format. But which do you think is the best codec? I do belief apple should support AAC and Ogg Vorbis in their next iTunes update, I'd really like to see them both in there since they are both very nice codecs.