Looking for an Expandable Learning Keyboard

[Firestreak]

I'd like to learn with lighted keys. I have one now, but the music selection isn't the best. I'm looking for something that can hook up to my PC and transfer over new songs - via midi files or something universal. Then I can choose from thousands. Does such a keyboard even exist?

 

[Skipp]

I don't know which keyboard you own, but keyboards have been able to read midi files for ages...

Either by transfering them by floppy, SD card, USB drive or just plain USB cable.

Basically, almost every keyboard on the market can do that. How much money do you have to spend?