Using my daughter's laptop (wanted to test it after a cleanup/update weekend), and a Terabyte USB hard drive I had bought to back up said laptop, I followed
These Instructions To Set Up And Use Exact Audio Copy. The song titles and album art pull down mostly automatically from Teh Web. It all worked very much like in that article.
I was very happy with being able to browse in the Tesla by album, genre, artist. I understand from those who have cars nicer than what I'd been driving, that there are better interfaces and Tesla's is still a work in progress. The reason for using a big hard drive and converting to FLAC is that the quality is like the original CD, and the Tesla reads those files.
I'd provide pictures of how it shows up in Pearlie May the car, but she's in the body shop. I have a loaner Toyota and I really miss the Tesla. Partly for the audio system...
I have all the rest of my collection to convert now too. Hundreds.