Last time I checked, LS is Open Source, but just not completely GPL.
Which isn't really much of an issue unless you want to sell embedded
hardware that runs LS of course.
Also, I had this discussion about SF2 and SFZ on the linuxsampler
mailing list a while back. Long and short of it is that SF2 is an
older, monolithic file format with limited modulation capabilities
designed by EMU/Creative whereas SFZ is quite a recently (and open
format, like SF2) developed format that seperates the .wav
multisamples from the programming bits and is designed by
Roland/Cakewalk (but bears no relation to the Soundfont format).
On Wed, Dec 29, 2010 at 8:57 PM, Mark Knecht wrote: