Arkon,
I read ODE license, and it's my understanding if you modify the ODE library and distribute it with your product which is free or fee, your required to provide the modified source code to the ODE Library.
For example, if you distribute copies of the library, whether gratis or for a fee, you must give the recipients all the rights that we gave you. You must make sure that they, too, receive or can get the source code. If you link other code with the library, you must provide complete object files to the recipients, so that they can relink them with the library after making changes to the library and recompiling it. And you must show them these terms so they know their rights.
Entire license here:
http://opensource.org/licenses/lgpl-license.php
Just a FYI
I read ODE license, and it's my understanding if you modify the ODE library and distribute it with your product which is free or fee, your required to provide the modified source code to the ODE Library.
For example, if you distribute copies of the library, whether gratis or for a fee, you must give the recipients all the rights that we gave you. You must make sure that they, too, receive or can get the source code. If you link other code with the library, you must provide complete object files to the recipients, so that they can relink them with the library after making changes to the library and recompiling it. And you must show them these terms so they know their rights.
Entire license here:
http://opensource.org/licenses/lgpl-license.php
Just a FYI