Turn on your computer and check to see if it has any recording software pre-installed. Many computers today come with programs that can record music straight through the computer speakers. Apple computers usually come with GarageBand and on a PC; you can check in the program's menu for any pre-installed music programs. If your computer does not have a pre-installed music program, you can look for one to download online, or invest in a professional program. Some of the most advanced programs are Pro-Tools, Logic, Cubase, Cakewalk and Digital Performer.
Record your original song. Once you have recording software on your computer, open the program and make a new track for recording. Do some tests to check your levels to make sure that the sound is not too loud or soft and to make sure that every instrument can be heard evenly. After you check every one, press "Record" and play your song. It may take a few takes to get the exact sound you want or the best personal performance you can produce.
Export your song to a media player. After you record you are going to need to export the song to a media player so it can be burned. Exporting to a media player is very easy and this function can usually be found in the File menu within your recording program. Make sure to choose the highest quality file, name your song properly and then export the song.
Burn your original song onto a CD. Now that your song is in a media player, you should be able to do that easily. On an Apple computer, simply make a playlist for your song in iTunes, place a blank CD in your computer and then click "Burn." For a PC, do the same steps, only you may have the option of using iTunes or Windows Media Player, depending on which media player program you have installed on your computer.
Check your CD. Once your CD is finished burning, double-check the recording and the CD by placing it into a stereo and seeing how it sounds. It is important to do this before you let other people listen because you want to make sure that the CD works and that the song sounds how it was intended to sound.