The UCLA Phonetics Lab no longer distributes any software by mail or otherwise.  The following are available free for downloading:

UCLA Phonetic Data (formerly Sounds of the World’s languages):  Material illustrating the sounds of over 100 languages that have been investigated at UCLA, with an index of sounds by their phonetic characteristics, and an index of languages. Essentially the same as the CD included with the 5th edition of Peter Ladefoged's A Course in Phonetics.    Phonetic Data

PlotFormants for Mac or for PC: see our Acoustic Facilities page.

UPSID-PC. The UCLA Phonological Segment Inventory Database. Data on the phonological systems of 451 languages, with programs to access it, by Ian Maddieson and Kristin Precoda. This is an elderly DOS program (and thus Windows only), neither of whose developers are still at UCLA, and no support is offered. Available to download as a single zip file (and install and run on your own computer).   (Other versions/resources may or may not be available elsewhere, e.g. UPSID Natlangs, Prolog interface.)

Note also:

UCLA Phonetics Lab Language Archive:  This Phonetics Lab site, for the NSF-funded archiving project begun by Peter Ladefoged and now directed by Russ Schuh, makes available archival sound files from many languages, but not arranged as teaching materials. 

PCQuirerX: Download a free "lite" version for recording and waveform editing, but not analysis.

scripts for perception experiments in Matlab