Why not encrypt the audio and have users download a special player that will decrypt at runtime. End user hears the intended audio and youtube only hears noise.

NewSpin360 uses flash but this 3d is quite impressive!

I voted 50 - 100 TB which is really not going to be that much 10 years from now. I believe that we will get most everything off the internet so we will not need to have that much storage space. Download movies and don't save them. Download music and save them online instead of on hard drives. Right now, uploading a 90 minute video with high quailty takes 100 MB per minute or more, and thats not true HD quality either. We want to upload hours the storage adds up quick.