I just downloaded OSC-Kit.tar.gz from CNMAT, version 1.0.
Here is the license as it appears at the top of each source file.
There is no mention of educational/non-commercial restrictions.
Perhaps the OSCx files are from older source?
/* Copyright 1998. The Regents of the University of California (Regents). All Rights Reserved.
Written by Matt Wright, The Center for New Music and Audio Technologies, University of California, Berkeley.
Permission to use, copy, modify, distribute, and distribute modified versions of this software and its documentation without fee and without a signed licensing agreement, is hereby granted, provided that the above copyright notice, this paragraph and the following two paragraphs appear in all copies, modifications, and distributions.
IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
The OpenSound Control WWW page is http://www.cnmat.berkeley.edu/OpenSoundControl */