is there any tech system that could just work with a 3.5mm jack that i can plug into an iPod Classic?
I plugged my iPod nano in using the iPod-to-USB lead, and the car ignored all the .m4a iPod files. I can't find the right page of the manual right now, but there is a short list of file types the MG4 will recognise and .m4a is not one of them. So if your iPod files are in .m4a format it won't read them.
It
will read .mp3 files. What I have done is re-import the CDs I wanted into iTunes, but asking it to import them in .mp3 format. This has let me re-organise what I'm listening to, and tidy up the embedded text information at the same time. If you don't have CDs of the tracks on your iPod then I think you'll have to convert the tracks themselves to .mp3 format and go from there.
Here's where I ended up, with a folder on my computer containing all the tracks I wanted, named and numbered to keep individual works together so that they play in the right order.
That's the start of it, and currently it goes all the way to this, 319 tracks later.
The numbers in the second column are completely irrelevant (they're the numbers of the tracks on the original CD, put there by iTunes), and the MG4 plays the tracks in the alphanumeric order of the
third column, the track title. I have simply renamed the files (first column) to match this, for ease of finding the tracks in the folder. (This has to be done in this folder,
after the files have been copied from the iTunes Media folder, to avoid terminal confusion of iTunes.)
Sure, it would be nice to have a couple of levels of folder recognition so that it would be simpler to find what you want on the car's screen rather than scrolling down hundreds of tracks, and that would also avoid having composer's name and the name of the work scrolling at the start of every track (you'd just need the number, to keep the tracks in order), but I'm not finding this a huge deal.
I found that once I had the protocol sorted (see the OP) and one work imported to the USB stick and playing, I was a happy bunny. Other works can be added when you feel like it.
Sure, I've got an iPod stuffed with all this stuff and more, which the MG4 won't condescend to read. Which is annoying at first, coming from a Golf which
would read the iPod. But you can't listen to everything at once, just do it a bit at a time once you have enough on the USB stick for your initial listening requirements. Navigating the iPod on the Golf wasn't exactly a walk in the park either.