1 well that is not any special cd player is specifically made for cars that read usb sticks
2 cd can be easily secure with a double tape seen that done with wireless carplay dongles no difference, also cd players can move around the technology for that was already invented that is why walkmans were replace by cd players you can walk and play
3 not really if you burn your cd/dvd with a mp3 format you can actually store multiple cds did that with my first car since i didnt want change cds. but i am just trying to stay original/old school
4 the life expectancy of cd as long as it is well taken care of is a lot longer than the read write lifetime of an usb
also if you are planning to copy the music from your disc to usb i would be careful with laws and regulation some tracks have code to prevent the copying of tracks and others are legally protected against copies. Although some places have said that as long as the media is not distributed does not count as copyright law is a really gray area and it depends
also i did read the thread that is why i responded the original comment because someone might want to use this method for classic feel. As for your alternative i think everyone by now know how to put music in a usb stick or know someone that does.
sorry my comment bother you so much
as for how to properly sort music is pretty simple but i haven't check the usb interface of the mg4 and it can differ from car to car also from audio format to audio format. Using folders are sometimes the best and obvious choice. When ripping music use ripping tool that will keep metadata and will allow you add your own some car interfaces allow for sorting of the metadata like genre or author for more here is a link.
Last time i had to rip a cd i used zune (no longer available) it had the best metadata ripping and editing tool also would allow for search of already existing metadata
To properly organize music on USB for a car, choose the appropriate hierarchy for storing music in the flash drive. Sort your music into folders to use playlists in your car. That way, you will have an easier time finding the music you want to play in your car. To use it as playlists, you'll...
99carstereo.com
I ll take my leave