Do not install into program files, use something like C:\E-touch\
Make sure you right click and run as admin. You can set it to do this everytime by right clicking and selecting properties and under compatability setting it to always run as admin. You need to do this for all the exe's at least the config.exe and the e-touch.exe.
Once you have done that it should just be a case of running the config and pointing it to your music and generating the library. Make sure you have a least 2 albums there, it can act funny with only one (2 sub folders of music from where you build it).
The random play is quite indepth, you need to put the tick in audio so it will pick randomly from your audio library. The boxes with number in allow you to weight certain things so like 4 in audio and 6 in video should be a 60% video bias.. This works for all the various categories etc allowing you to tailor it pretty well. For basic random play you just need random turned on and the audio selected with any weighting number. Make sure E-touch DJ isn't turned on.
If you follow what i have said here you should be up and running. I also suggest getting everything running under the default skin first so you can be sure skin errors are not causing something to act funny.