itunes

Last week I purchased two albums via iTunes for Windows. When I try to play the songs, it keeps asking for authorization on each song (I've entered it for each song repeatedly, but the message still appears).

The song info shows the correct Apple ID as the purchaser. I've re-authorized my computer; then deauthorized/authorized the computer, but the handful of songs still require "authorization" (and yet don't recognize it when I put it in). My iTunes is up-to-date.

I appreciate any assistance!