Many TTS demos in several languages from different systems with links to their homepages.

Provides public group comparisons of several AAC codecs and other formats at different bitrates.

Hard- and software company for professional broadcasting products with AAC/MP4 support.

List of internet radio stations using aacPlus for their low bitrate streams, among them SomaFM.com and Boomer Radio.

Reviews, articles and forum discussions about cell phones capable of AAC/MP4/3GP playback (also called "iTunes" format sometimes, use the site search).

Resource for news, information and products about MPEG-4, H.264, Windows Media, High-Definition, Streaming Media and related technologies.

Book by Marina Bosi and Richard E. Goldberg.

Platform to support the implementation of their software SDKs including AAC/MP4.

Hardware manufacturer of the Zephyr ISDN codecs for radio and television broadcasters providing articles and brochures about different AAC implementations.

The web archive of the public MPEG Industry Forum mailing list with many knowledgeable participants from companies like FhG, Apple and Microsoft.