Well, there we have it. Instead of doing everything legally, like you're supposed to, you went ahead and published copyrighted material, thus taking away from potential profit of the video maker. As a result, Youtube went ahead and disabled the audio of your video. Now you're peeved 'cause your illegally published work has no audio. Well...fear not, I have a solution:

Step 1

Upload your video. Add all the copyrighted junk that you want to it. In fact, I even encourage it if you'd like to test this method out. I hear Disney doesn't like people using up their stuff (even though many of their stories are already public domain. Shhh!~). Upload whatever you want. Namely, the thing that gets muted is audio.

Step 2

Click "MyVideos". From MyVideos, find one with the Copyright claim junk on it. From there, go MyVideos--Dispute Copyright Claim. There should be an area where you get to select a reason for dispute. This is the key area here.

Step 3

Copy and paste this into the "Select Reason for Dispute" area.

Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for fair use for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.

Step 4

There will be an area for Signature, and Statement of Good Faith. Write your name in the Signature area. In the Statement area, copy and paste this into it.

I have a good faith belief that the material was disabled as a result of a mistake or misidentification, and that I am not intentionally abusing this dispute process.

You're done. Pat yourself on the back for beating the system! Now go ahead and upload all the copyrighted material you want.