Hello

thanks for your support and generosity. your donation is by now confirmed.

re. 1. A faster, more efficient workflow
a. CTRL+Left-click and drag a audio or MIDI item to copy it.
once selected, one or more audio and midi clips maybe moved by just left-click+draggig or copied through usual clipboard operation, like ctrl+c (Edit/Copy) and ctrl+v (Edit/Paste); when pasting you can use the mouse (dragging+left-click) or the keyboard (arrow-keys+enter); have you missed it or am i missing your point?

b. An option or a key combination(like alt+left-click and drag) to loop a MIDI or audio item instead of just making it longer.
try pointing to any clip and invoke Clip/Loop Set menu; voilá; note that you can (re)assign any custom keyboard key combination to any menu item as a hot-key shortcut (see Help/Shortcuts... menu).

c. The ability to move the playback cursor by clicking on the time-ruler on the main window, instead of having to left-click and drag
try shift/ctrl+left-click on time ruler; it's exactly what you ask. i hope :)

d. Less tool bars and right-click context menus common tasks, and more UI buttons and hotkeys
there's many common tasks which their ui can be improved no doubt; i tended to keep on toolbar only the most fundamental ones; otoh. hotkeys are called shortcuts (see above on Help/Shortcuts... menu)

re. 2. A more detailed user manual.
that's where you can help a lot. the user manual has been the work of some brave souls, all volunteer effort. we all know it's now terribly outdated and incomplete. have a note that the original volunteers authors were only experienced with audio stuff so that there's this almost complete lack of mention regarding midi part of things. even though they have done a remarkable job nevertheless. however, their lives have long gone their ways, on their own personal agenda which doesn't have slightest bit related to qtractor development.

all that to say that i'll be receptive to all proposals and contributions regarding the user manual improvement. i'll even dare to consider donations being fully channeled into that task, if you don't mind of course.

re. 3. Include some plugin instruments with Qtractor.
no. i not keen to do that just yet. read more below...

re 4. Support for Ubuntu, and precompiled .deb installers on your sourceforge downloads page.
i've used to do that but left the idea because it was too much of a burden on me. major reason being i don't use ubuntu in none of its incarnations anymore (i was doing it in some virtualbox'es just for that purpose, now gone).

for all ubuntu and debian'ese things, i'll point you to the great kxstudio project and damn good repo's which caters to be in the bleeding edge on all things related to linux-audio, including qtractor and plugins and what not ;)

cheers