Arduino Sending Keyboard commands

What I am looking to do is use my stereos universal remote to send a few commands to my computer. I wanted to use stuff like control + right arrow, control + left arrow, space, windows + tab, stuff like that so i can control iTunes from across my room. However I don't know how to get my arduino to send commands like that to the computer. I have tried finding stuff but I cant, any help?

Long story short, you will probably need to write an application for the pc to receive the data from the arduino and do what you desire on the pc.

What mechanism does your stereo remote control use to communicate with the stereo?