Music for money or for ads?

For $0 a month in cash, I can download a sizable selection of music to my Playsforsure (Creative Zen Vision M) music player, but I have to spend my rare and precious time watching advertisements. Right off the bat, the real economic cost of this service based upon my opportunity costs is over $50 per month without exaggeration.

Or, I can pay $15 a month for Rhapsody or Napster and not have to spend my time being subjected to advertisements. $15 a month, which, and let's be honest, is not a lot of money to have access to a library of millions of songs.