Any recommended sound design software for Linux? It doesnt have to be open source or free.
Pure Data .
While not free (as in beer or freedom) if you want a fully-fledged DAW there's also Bitwig Studio which is available on Linux, Windows, and OS X.
There's even a free demo available on their website which only has the limitation of not being able to save your projects. (If you're not using Ubuntu, check your repos. For instance Arch has it in the AUR)
Note that I do not work for Bitwig, I just really enjoy using it. =)
Audacity® is free, open source, cross-platform software for recording and editing sounds (comparable to software like Sound Forge and Wave Lab, only somewhat simpler).
Audacity is available for Windows®, Mac®, GNU/Linux®; and other operating systems.
Professional-grade multitrack/multichannel hard-disk recording/DAW: Record, edit, mix and master audio and MIDI projects.
Comparable to software like Pro Tools, Cubase and Logic.
For an extensive list of audio related software for linux see: