Well, we will also release the Qranger under stand alone Qranger Composer Linux application: http://www.lionstracs.com/store/information_pages.php?info_id=34

The Qranger Composer will be included in the 64 Studio Linux distribution, where you are able to Free download and install in to a standard PC X86.
In the 64studio distrubution is also included the Linuxampler and we will distribuite some Qranger template for automatic connection on Linuxsampler and Vst.

so.. if there someone is able to develope code under QT4, we give also the all souce code for manage and Upgrade of the all feature and ideas that you like and then redistribuite it again back ( GPL license)

My personal Idea and I will continue only under this way, is to use one Timeline Audio-Midi SEQ with HD streaming.
Only midi pattens arranger have to much limitation and are not able to manage Audio tracks, the problem you know, are the Offset start point when you change the chords.
Sampler is not able too, because is not possible to chenge the offset start point in realtime.

Maybe your all new arranger ideas can be featured under the Qranger Open souce.
Enjoy what you play.
cheers