When I download music from either Yahoo or Walmart to my PC they work fine. When I transfer them to my N75 the phone say something like "renew you license." What I want is a music site where I can buy songs by the track and download them thru my PC to the phone and have them work.
What you can do to get around the issue - and I know it is a hassle - is burn the song(s) to CD and then rip them back to mp3. This removes any DRM and makes the song open. Itunes works great for importing (ripping) the songs, but you have to change the preferences. Itunes is not automatically set to download (rip) songs as mp3s.
In order to rip the CD you now have and create MP3s, you can use iTunes. Windows media player will NOT allow you to create MP3s without an add-on which, last time I checked, you have to pay for. iTunes is free and will do this without an add-on, but you will have to modify the preferences.