MusE v0.9 released (Linux/Free)

Some major changes since 0.8.1:
- Working -old style- automation system, pretty much all parameters should be automatable, audio and midi.
- Redesigned Solo/Mute system, works much better
- lots of "things" added
- lots of bugs fixed

Excerpt from the ChangeLog:
* Fixed bug 1650953 - select and move segfault
* Fixed broken master list editor. Should cure bug 1687166
* Added auto part resizing to drum canvas
* Fixed intermittent crash when cutting a part.
* Fixed arranger part selection
* Fixed arranger part operations (move etc.) to use selected part.
* Fixed arranger keyboard left and right previous/next part selection.
* Fixed wave editor - Black selection bar intermittent drawing.
* Wave editor now allows you to open multiple selected wave parts
* Fixed intermittent arithmetic exception crash in wave viewer.
* Fixed bad wave drawing above certain zoom level in wave editor.
* fix for sustain pedal to work as suspected when looping.
* Feature request: 1650957 space bar should start/stop playback fixed
* Fixed bug 1645575 - Eraser tool causes segfault in drum editor
* Fix for bug #1074808 "NRPN - still 128 values?"
* Fixed some major issues with undo/redo.
* Prevented saving and segfault upon loading for routes with empty names.
* Add new soloing system.
* Enabled MIDI mixer strip solo buttons.
* Fixed loading of .med files, with plugins, created before muse-0.9pre1
* Fixed touch mode events storing, was not right.
* Sliders, knobs and labels now respond to mousewheel and paging properly.
* Linked labels with sliders and knobs for paging and mouse wheeling
* Fixed integer controls (like Glame Bandpass 'stages').
* Fixed external plugin gui's to look like the built-in freeverb.
* solo is now united between midi and audio
* fixed issue with hanging notes for softsynths when stop is pressed
* fixed faulty off value for aux when set to max
* Fixed timing bug causing MusE to depend on jack buffer setting
* Added support for auto-scroll for all drag operations
* Adopted RT locking method from 1.0 branch.
* Fixed old bug - DoubleLabel right click causes popup and runaway increment.
* Changing global tempo now updates things. (Like resizing wave tracks).
* Fixed ladspa plugin automation not working until plugin displayed.
* Select right item when stacked on top of each other, for p-roll and arranger
* Apply effect rack before sending aux
* Auto assign internal softsynths upon creation
* New method for pasting parts, keep original spacing, fixes bug #1516294
* Muting of midi-tracks no longer mute input, bug #1092343
* Fixed issue with playing of controllers when moving playhead, bug #1316542
* Cached peak files now updated when wave files are more recent, bug #1469177
* Fixed bug with recording notes to existing part, bug #1552783
* MusE now asks when imported wave file has differing samplerate, bug #1428248
* Fix for pianoroll selection of events in/outside loop with respect to offset
* Added rubberband scrolling in arranger, drumedit and pianoroll, bug #1057732
* Changed colours of audio-out and wave strip names to match icon colours
* Fixed aux sending
* Fix logarithmic feedback to plugin sliders
* Fixed multiple part undo for move,drag and copy in arranger, bug #1516298
* Fixed multiple note undo for move and drag in pianoroll
* Fixed cursor placement in List Editor upon deleting events bug #1417718
* Fixed soloing. Also multiple soloing now allowed.
* Enabled solo buttons on the mixer strips.
* Fixed major issues with rack plugin moving, saving and loading.
* Fixed problems with multiple tempo changes and incorrect wave part lengths.
* Changed plugin code to use double instead of float to stop certain errors
* Full LADSPA plugin automation.
* fluidsynth: fixed pitchbend events, fixes bug #1404212
* Editing volume and pan with keyboard on audio strip now works
* Fixed issue with recording audio, fifo could overflow with small jack sizes
* fixed storing of files with relative path when "under" the project path

MusE is a MIDI/Audio sequencer with recording and editing capabilities written by Werner Schweer. MusE aims to be a complete multitrack virtual studio for Linux, it is published under the GNU General Public License. MusE has among other things support for:

* Midi sequencing
o Record/Playback/Import
o Input filter
* Audio sequencing
o Record/Playback several mono/stereo inputs/outputs.
o Use effects
o Nice routing features
o AudioGroups
o Perform audio effects like chorus/flanger!
* Jack
o Use the Jack Audio Connection Kit for midi/audio routing.
o Internal Audio Routing Interface
* ALSA - based on the Advanced Linux Sound Architecture

You can use several soundcards to access external midi devices and record/playback them with MusE.
But MusE is much more.

MusE is a multitrack virtual studio for Linux that has support for sequencing of both midi and audio and has, among other things, support for LADSPA, Jack and ALSA.
Read more here.