However, at this stage in 32bit Ubuntustudio, running through Wine into Reaper (which is already 64bit), i've been busy building up an orchestral template, and fine tuning to enable me to port the two together without any juggling, or shared resource.
Here's the wonderful Linuxsampler, showing just how powerful it can be, with two 32 stereo channel audio devices, and 24 midi ports, each with 16 channels.
Personally, i think this is outstanding, and completely removed from former trials and many tribulations with gigastudio.
Rock on, the Linuxsampler team!

Alex.