I have a project I am working on (non-comercial) and I found a texture that - with a few modifications - would be perfect, so I purchased it.  Unfortunately, the texture is in a MAT format and I can't find the the actual JPEG/GIF/TIFF that is used.  Is there anyway to access those files for modification?  This would be for an animation project and the actual files would not be distributed at any time.  The texture set copyright states that the set may be used for commercial or non-commercial projects.

Thanks in advance.