Q: iTunes is set as the default music player on my PC, but when I click on a track and ask iTunes to play it, it will play through RealPlayer or Windows Media Player. Can you tell me how to get my music, and especially my CDs, to play through iTunes?
A: If you select Edit > Preferences in iTunes, then click the General tab, you’ll see an option: Use iTunes as the default player for audio files. This should be checked. If this doesn’t override the other programs you have installed, you’ll need to go to Windows Media Player and Real Player and change their settings.
In Windows Media Player, select Tools > Options, then click the File Types tab. Uncheck the file formats you want iTunes to play. From what you’ve said above, you probably want to uncheck Music CD Playback, MP3 Audio File, and perhaps AIFF Audio File as well. Click Apply.
For Real Player, select Tools > Preferences, then click the Content category, then Media Types. As with Windows Media Player, uncheck those file formats you don’t want Real Player to play. Click OK.