Hi,
Petri-Foo is a fork of the Specimen sampler project created in
February 2011. The first source-code release of Petri-Foo is now
available to download and build and is available directly from:
http://sourceforge.net/projects/petri-foo/files/Source/petri-foo-0.0.1.tar.…
Many of the features of Petri-Foo are almost identical to Specimen except:
Modulation:
 * decoupled LFOs and Envelopes from parameters
    (modulation sources can be chosen independently
    for each parameter).
 * LFOs themselves can be frequency modulated
 * Keyboard tracking.
Sampler:
 * improved sample viewer
 * improved drawing code using Cairo
 * faster waveform drawing after window damage.
 * additional 'to end' playback option.
 * fades for playback and cross-fades for looping
Voice:
 * improved mono/legato operation
 * improved envelope behaviour for mono/legato operation
Plus many other changes less visible to the user.
Petri-foo is not well tested at all. Part of the purpose of this
release is to hopefully find users to test Petri-Foo and to report
bugs and other problems, and ideas for continued development. More
information for those interested can be found on the Petri-Foo
homepage.
The Petri-Foo homepage can be visited at:
http://petri-foo.sourceforge.net/index.html
Cheers,
James.