iTunes: How to convert a song to a different file format - http://support.apple.com/kb/HT1550 - including information about different formats and discussion about compression.
This will create a second file that will appear identical to the first one but at a lower bitrate as you configure in the settings. Unfortunately this is a bit of a nuisance since it get mixed up with the rest of the iTunes files (you can try to isolate them a bit by sorting according to bitrate or creation date). You can add them to a separate playlist, then drag that playlist to the flash drive.
Thanks for the reminder, I am set with how to convert.
In transferring it to the flash drive can I set up different playlist ?
In other words if I put 4 or 5 separate playlists onto the flash drive will the car audio be able to read it ?
I realize that this is not an Apple question but am hoping that someone may have done this or tried it and has the knowledge and experience with it.
The good news is that I can set up a Playlist (Folder) on the Flash Drive and drag and drop the songs into the folder and in the car it lists the folders and the name and artist of the songs.
The BAD NEWS is that the car seems to only play songs that are in MP3.
All my songs are in iTunes as AIFF.
The only solution I see is to convert all the songs to MP3 and then drag and drop them onto the Flash Drive.
Unless there is a way of exporting them as MP3 into the Flash Drive via iTunes without making duplicates in iTunes.
iTunes is probably principally designed to work with Apple devices. The extent to which it works with other things is fortuitous. The convert to lower bitrate without adding to iTunes is really a feature of syncing which only works with Apple devices. All other things you have to find workarounds. If you're lucky you can find a third party encoder that lets you drag playlists of files to the encoder for batch processing and then put them in a folder that isn't part of iTunes. I just tried this with my old version of Max and it didn't work. XLD doesn't let you drag files to it for this purpose. Some applications will let you drag from iTunes to the application but many won't.