Hi list,
I'm happy to announce the release of Spek 0.6 - a multi-platform
acoustic spectrum analyser.
Spek is available on GNU/Linux, Windows and Mac OS X.
Find out more about Spek on its website: 
http://www.spek-project.org/
New Features And Enhancements:
Spek 0.6 is part of beta 0.x releases, leading up to a stable 1.0 release
later this year. Check Spek website for the roadmap.
New features since 0.5:
 * Switch from GStreamer to FFmpeg libraries for audio decoding. This
   speeds up the overall analysis by a factor of 1.5 to 2.
 * Decode audio and perform the analysis in separate threads. This makes
   the analysis 1.3~1.8 times faster on multi-core systems (issue 11).
 * Check for a new version once a week and notify when it becomes
   available (issue 27)
Enhancements:
 * Windows installer branding (issue 32)
 * Option to launch Spek when the Windows installer exits
Bugfixes:
 * Fix link activation on Windows (issue 31)
 * Fix ALAC issues on OS X (issue 23)
 * Re-run the analysis only if the window width has been changed
 * Fix opening of files containing Unicode symbols in their name on Windows
Cheers,
Alex