> Anyone knows/has some idea on how ‘free’ these things are?
> The website says its available only on CD as of 15/04/2005.

Its not that free as we would guess
chk this link
it says the following…
You may download one copy of the Materials on a single computer for your personal, noncommercial internal use only unless specifically licensed to do otherwise by C-DAC in writing, or as allowed by licensing terms which accompany or are provided with individual Materials. This is a personal license, and under no circumstances shall this license be construed as a transfer of title to any Materials found at this Site. The license granted by C-DAC herein is
subject to the following restrictions: You must not: (a) modify the Materials or use them for any commercial purpose, or any public display, performance, sale or rental; (b) decompile, reverse engineer, or disassemble software Materials except and only to the extent permitted by applicable law or specific license; (c) remove any copyright or other proprietary notices from the Materials; (d) transfer the Materials to another person; (e) use any such Materials on any other Web site or networked computer environment. You agree to prevent any unauthorized copying of the Materials. C-DAC will terminate this license at any time if you are in breach of the terms of this Agreement. Upon termination, you will immediately destroy the Materials.

may be a paragraph
but its worth to read to know abt the exact position of that product