I want to use paulscode sound system (http://www.paulscode.com/forum/index.php?topic=4.0) in GPL-3.0 licensed open source project.
The library has the following license (it seems it is custom written license):
The SoundSystem License: You are free to use this library for any purpose, commercial or otherwise. You may modify this library or source code, and distribute it any way you like, provided the following conditions are met: 1) You may not falsely claim to be the author of this library or any unmodified portion of it. 2) You may not copyright this library or a modified version of it and then sue me for copyright infringement. 3) If you modify the source code, you must clearly document the changes made before redistributing the modified source code, so other users know it is not the original code. 4) You are not required to give me credit for this library in any derived work, but if you do, you must also mention my website: http://www.paulscode.com 5) I the author will not be responsible for any damages (physical, financial, or otherwise) caused by the use if this library or any part of it. 6) I the author do not guarantee, warrant, or make any representations, either expressed or implied, regarding the use of this library or any part of it. Author: Paul Lamb http://www.paulscode.com
Is such a license compatible with a license like GPL-3.0 or are there any parts making it incompatible.
With compatibility, I mean dynamically linking to the JAR of the library for the use in GPL-3.0 licensed project.
There is also JOGG plugin part of the library, with only this written for the license:
J-Ogg License: You are free to use, modify, resdistribute or include this software in your own free or commercial software. The only restriction is, that you make it obvious that your software is based on J-Ogg by including this notice in the documentation, about box or whereever you feel apropriate: "This software is based on or using the J-Ogg library available from http://www.j-ogg.de and copyrighted by Tor-Einar Jarnbjo."
How is the compatibility with this license?
Are there any tips on what to look for when dealing with "custom open source" licenses in sense of GPL-3.0 compatibility?