Is it possbile to play a file from the memory without caching it on the HDD?

Hi all

I want to know something :

Is it possible to run and play a file from the memory without storing the file on the HardDisk Drive?

I mean for example : a Video file (Encrypted) I want to send it to the memory and then Decrypt it there.. and then the decrypted file will be placed on the memory without caching it on the HDD and will be played from there also without caching it..

So is it possible to play the file from the memory?

I know it is possible.. but can anybody give me some examples using any language like : Visual Basic.. C++.. ASM...

I prefer VB..

Please it is very important to do that..

Cheers..