need to protect data anyone knows a good software?

[abispac]

Hey thanks for reading, im about to build a portable jukebox for a friend of mine that lives out of town, ill be using etouch for the juke and what worries me its that i know my friend has friends that like to pirate software and then put'it on the net for free, and as i apreciate barcrest great work on this i wouldnt want my friend friends piking at the jukebox just to get the information and data for free, so i was wondering if theres some sort of software that prevents acces to the harddrive from another computer, Im pretty sure if they ask my friend to borrow the harddrive from the juke,they will try to copy all of the data from it. As far as gettig the data from the juke itself, im pretty  sure it would be a bit hard for them as i set up the computer to ask for a password after trying to disable the sheller im using.
Thanks for any help.

[drventure]

Unless you use an encrypting file system, it's trivially easy to lift data from a drive, no matter the format.

Windows has such a file system, but the one time I experimented with using it, it was really nasty.

You +might could+ use something like TrueCrypt. It's an excellent open source encrypted file system. Essentially, you create a file, say 10GB in size that is encrypted. You then launch truecrypt and "mount" that file, providing a password.

Once mounted, the contents of the file "look like" just another drive letter. You can access it just like a normal drive.

But turn the machine off or logout, and the file dismounts, and the contents are no longer acccessible.

Might not be exactly what you're looking for but it might lead you in the right direction.

[abispac]

looks interesting but it apears not to be what i looking for, as i need somenthing more user friendly.thanks for the tip. 

[drventure]

Yeah, truecrypt isn't exactly super user friendly, but it might lead you to something else. It worked for what I needed (encrypting contents of thumbdrives)