At NAB, Berkley Integrated Audio Software (BIAS) is demonstrating Deck 3.5, a new version of its multi-track digital audio workstation software that adds native support for Mac OS X, among numerous other features. Deck 3.5 will ship in the second quarter for US$399. Users who purchased version 3.0 after October 1, 2001 will be entitled to a free upgrade, while those who purchased the software earlier will be able to upgrade for $199.