AWT2 is a software package that allows users to embed or extract short data payloads within wave files. It is available as a Windows/Linux GUI and console utilities bundle from www.audiowatermarking.info.

One of the best features of AWT2 is the extremely robust watermarking system. The watermark is designed to survive all kinds of audio conversions, including transcoding via MP3, Ogg Vorbis, and other lossy coders, acoustic coupling (transducing via air), effect processing from simple EQ to extreme dynamic range compression, reverberation, echo, and more.
You can try out the AWT2 package for free, as the evaluation (demo) version of the software contains all the basic functionality you need to test the performance of the software. The demo version is available to download for free, even though its functionality is limited. However, with its limited functionality, you can conduct sufficient tests to decide whether AWT2 meets your expectations before buying a fully functional version.
Version 0.12.01: N/A