I guess that it could be interpreted that way also, but looking at the stack of discs (which look like CDR's) the mp3 stack is smaller. I reality if you rip a CD in mp3 format and wma format using the same rate (128, 160, 192, etc...) for both the file size are generally the same with the wma being just a little bigger. But MS claims that the file sizes are smaller, they are only smaller is you use a lower rate for the wma than the mp3. MS claims that wmas sound better at lower rates than mp3, so you can use a lower rate wma and have smaller files. Alister