Flash: I:\K-MELEON1.5.0DE-DE\plugins\NPSWF32.dll is AFAIK played by a single big dll that can be stored in k-meleon's plugin folder.
You can pass on preinstalled flash by passing on this dll (Hao does)
On every PC K-Meleon will auto search & find other NPSWF32.dll in other then his own plugin folder at startup. The plugin in his own plugin folder will get preference (will be used).
to have the newest NPSWF32.dll on Your USB if You are not sure whether the flash plugin the PC You are using is updated.