982 Views 2 Replies Latest reply: Jan 23, 2006 8:38 AM by MacMuse
You can use iTunes' "Convert..." command to change files to different sizes, but you cannot change any files purchased from the iTunes store.
Set the Import preferences in iTunes -> Preferences -> Advanced tab -> Import tab to the desired size for new files. This setting affects any future CD rips as well as the Convert command. Right-click the track to change and choose "Convert to ...". The original file is left untouched in your library. Convert actually makes a copy.
Converting between formats does reduce the audio quality, regardless of the new file encoding and bit rate.