You can download version 0.9.1beta here. If you have a Mac, the recommended version is 1.1.0betaRC6b - this will help you work around the tightened permissions on MacOSX 10.8.

What is HD24tools?

HD24tools is a software suite providing a state of the art toolset for interoperability between the Alesis ADAT HD24 recorder and your computer.

Some of its unique features are:

Exporting audio based on locate points
Splitting up tracks into smaller chunks to work around the 2 gigabyte .wav limitation
Catalog functionality
Realtime auditioning of drive content
Realtime streaming of drive content to other applications (Linux only)
Data recovery functionality

HD24tools can be downloaded free of charge. However, you are encouraged to donate a small fee if you find it useful.