Post Syndicated from jzb original https://lwn.net/Articles/1092439/

Version
4.0 of the Audacity audio editor has been released. Notable changes in this
release include a rewritten interface using Qt, ability to save user-interface
layouts as “Workspaces”, improvements in working with audio clips, and a new
.aup4 project format.

The release is not fully feature-compatible with the Audacity 3.x
series; see the compatibility
notes for a list of missing features.