March 3, 2008
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Qtractor is an Audio/MIDI multi-track sequencer application for Linux, written in C++ around the Qt4 toolkit. It is still in some alpha stage of development, but already functional.
Qtractor 0.1.0 has been recently released. Here is the list of the most important improvements:
- Audio clip time-stretching makes its debut, with code adapted and refactored from the SoundTouch library, under the (L)GPL umbrella.
- New “Options…/Audio/Playback/Quick seek time-stretching” global option, providing a quick seek mode (hierarchical search) while doing all audio buffer time-stretching.
- Changing session tempo will automatically apply the corresponding time-stretch percent factor to all in-place audio clips. Audio clip dialog also includes a new time-stretch property setting.
- Fixed instrument bank selection method, “Bank MSB” (2), which was broken enough to never send the correct bank number.
- Mouse-wheel horizontal scrolling is now accessible on every view, while pressing a modifier key (Shift or Ctrl).
- New auto-backward transport option: when enabled the playhead will be reset backward automatically whenever transport stops playing.
- A suicide-crash has been fixed while invoking the bus dialog from the respective mixer bus strip context menu.
- Master (default) buses are always set to Duplex mode, being now an enforced update policy while on the Buses dialog.

Rui Nuno Capela, Qtractor’s developer, tells about his motivation:
Qtractor has been my hobby, kind of personal purpose in life and should stay in that status for quite some time. […] It could be seen as my “masterpiece”, although you might find I’m no master at all. Take it as my pet project, because, in fact, it is just that, really! If you feel minimally interested, you might want to come along and be welcome. I’ll cherish you, that’s what friends are. Willing to share the journey, and follow the turns. No commitments, just fun!

January 3, 2008
December 27, 2007