So basically, I found a way to rig it so I can broadcast my system sound over Skype, realized I had 50 something Vocaloid albums, and said "Why not share it?" So, I have a Skype group set up where I call people occasionally and play Vocaloid stuff for them. If you're interested, PM me on Skype (ozzi9816) saying you want to join the group, and I'll add you. If you want the radio open, again, just PM me and I'll see what I can do.
I know it's not really a site, but I couldn't find a better section for this...