Hello everyone. 
I'm here to get some help with this program! 
So, I got a Midi composer from 1995 wich originally came with this CakeWalk Home Studio. But after tons of times moving home, I lost it. 
My question is if I can download the CakeWalk (if I find it online) and use it like before. 
To be fully honest, I don't understand ANYTHING about this program or the MIDI composer... I just wanna learn how to play the piano and according to the box, I'd be able to do it with that program! 
Thanks a lot! 

First action would be check out your store account/products and see if it is available.  If not I would then approach customer services and see if they can help though I think you might have to prove some proof of purchase.

Even if you managed to get the program, the other big question is if it will run on a modern operating system.
 
Honestly, there are tons of free resources out there to help learn to play piano.  YouTube would be my first stop.