I almost scraped up the EXISTING Instructions on how to do this for you and pasted them here as a response just to get you to upload your Star Trek Mp3's. Yes Im a geek too ....But I went with Transformer. sounds.
Also I'm new here so I could have used the Rep Points for the simple Copy & Paste job to answer your question but then You wouldn't learn to Search for your own answers which by the way exist in over five threads in this forum alone... I could have cleaned up the references in the postings I used and noted my personal experience with these UGLY little free registry editors they apparently have for PPCs and recommended one and gave you a line or created an upload but... well..... Happy hunting...
Perhaps the Moderators will rep me for the admonition on searching versus asking blindly ... Hint Hint ...