Qtractor

Version: 0.2.1 Qtractor is an Audio/MIDI multi-track sequencer application written in C++ around the Qt4 toolkit.

The initial target platform will be Linux, where the Jack Audio Connection Kit (JACK) for audio, and the Advanced Linux Sound Architecture (ALSA) for MIDI, are the main infrastructures to evolve as a fairly-featured Linux Desktop Audio Workstation GUI, specially dedicated to the personal home-studio. Creating new clips from scratch and track record monitoring with audio effects applied are now finally possible.

JACK Audio Connection Kit support . . . . . . . .: yes
ALSA MIDI Sequencer support . . . . . . . . . . .: yes
General audio file support (libsndfile) . . . . .: yes
Ogg Vorbis audio file support (libvorbis) . . . .: yes
MPEG-1 Audio Layer 3 file support (libmad) . . . .: yes
Sample-rate conversion support (libsamplerate) . .: yes
Pitch-shifting support (librubberband) . . . . . .: yes
OSC service support (liblo) . . . . . . . . . . .: yes
IEEE 32bit float optimizations . . . . . . . . . .: yes
SSE optimization support (x86) . . . . . . . . . .: yes
LADSPA Plug-in support . . . . . . . . . . . . . .: yes
DSSI Plug-in support . . . . . . . . . . . . . . .: yes
VST Plug-in support . . . . . . . . . . . . . . .: yes

Changelog:

Gradient eye-candy now featured for clips, tracks and mixer strips widget backgrounds, disabled on configure time (--disable-gradient).
MIDI pitch-bend/wheel events are now captured/recorded properly; in fact, there was this ancient bug, now squashed, as all MIDI clips weren't being stored at all if there weren't a single note event captured.
MIDI channel translation is finally in effect on monitored tracks, specially the ones set in omni-channel input mode.
MIDI open files dialog gets a few more file filter types now.
Playhead position is now shown, updated and can be also set on the main toolbar session thumb-view (shift-click to set the playhead).
The floating selection, as shown for a clipboard pasting operation, has been corrected regarding time scale (horizontal zoom) changes, while in the main track-view. Also fixed final position snapping precision (spotted in bug #2055846).
Current tempo and snap-per-beat setting now survive session cycling.
DSSI plugins implementing run_multiple_synths (eg. fluidsynth-dssi) are now formally supported according to the DSSI spec (hopefully); note that previously one could only have one DSSI plugin instance loaded in session in any given time, otherwise a sudden crash was in sure demand when either plugin got activated (fixes bug #2048198).
Audio plugin outputs now overrides each other when the number of output ports does not match the number of mix-down audio channels and thus fixing a nasty crash bug in the process.
All custom font sizes are now set relative to default global font.
Changing loop points by dragging on the time rulers is now mapped as undoable/redoable commands as it ought to be ever since.
Drop-span option (View/Options.../Drop multiple audio files into the same track) now takes into effect the current session snap-per-beat setting when concatenating multiple audio clips.
All plugins get their default bank/program selected on insertion.
Make record armed tracks muted for playback, a needed regression to let both audio and MIDI tracks behave consistently regarding input monitor switching through output.
Fixed a pretty old and shameless bug regarding MIDI clip recording, in which cases the queue start time offset was not taken into account, with captured events being recorded with erratic long delays.
Almost complete refactoring of the clumsy audio peak file classes, possibly making it even clumsier but straight neverthless, with the noble and final aim to build it in-flight and draw the waveforms while recording is rolling.
Recording clips get their initial name labels drawn while fade-in/out handles are dropped as found pretty useless while recording.
Escape key now closes connections and mixer widgets as found usual.