Do you run AnyDVD on your PC? If not then follow the next steps:
You need to disable autorun on your PC.
Hit the start button on your taskbar and go to "Run".
Type in "regedit" without the quotes and hit enter.
Now, browse to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdrom"
Look for the entry "Autorun".
Double click on it and change the value to "0".
Exit the registry editor and restart your PC.
Now, when you insert a CD or DVD in your PC, it will not automatically read "Autorun.inf" and it will not run "Autorun.exe". This will prevent CDs and DVDs from automatically installing DRM, Rootkit virus, Proprietary Media players, and so on.
However, when you want to install a game, application, etc... you will need to browse the disc and run the Setup.exe yourself.
Oh, and on DVD Video discs and Music CDs, if you ever see an Autorun or setup file DO NOT run it!! Most likely it is a virus or something else you can do without!
The files on your DVD are very suspicious!!! I have not seen DRMManager before, but I suspect it came from a Sony Movie...
When you insert the disc in your PC, do you get a EULA screen? Did you ever get one of those? If you did and you clicked "yes" (the DVD would eject when you press "no"), then try using this software
This is to remove Alpha-Disc from your PC. This is the software I suspect is installed on your PC.