Trying to burn an MP3 CD for my car. For songs in AAC format, I've created a duplicate in MP3 format. I created a Playlist to house the songs to burn to disc. When I drag or add the newly created MP3 format song to the Playlist, it shows up as AAC. Only songs that are already in MP3 format can be moved to the Playlist and keep that formatting. If I allow the AAC formatted song to remain in the Playlist and proceed with the CD bun, it won't burn the AAC formatted songs (not surprisingly). Does making a Playlist involve iTunes Match? I do use that service. I'm using OSX 10.9.3 and iTunes 184.108.40.206 on an iMac. Any help would certainly be appreciated. Thanks.