I would like to introduce my MS-Windows utility GbxDump to you.
The tool indicates all interpretable contents of any GBX Challenge and Replay file.
Besides the usual track information, like times and scores, all external dependencies are indicated.
Especially RPG tracks contain many of such links to mods, pictures, sounds, etc. By means of GbxDump these can be inspect very fast and easy.
More details, a screenshot and the download link can be found on my website:
http://www.wolfgang-rolke.de/gbxdump/
