My radio doesn't have CD drive but still, I'd rather use a £15, 128GB SD-card rather than carry a load of CDs around, each CD being 650MB, so that is about 196 CDs to get the storage that is on something the size of a stamp!
If the OP doesn't have SD slot (or CD slot), there still might be an aux input for getting music off a phone, and that will probably have at least 10GB spare for MP3 files (about 15 CDs).
Oh. That fix did not last long. So got a bit more aggressive. 240 grade sand paper folded to a point and light sanding of all the contacts. Repeat the glasses cleaner. Now working great. This has done away with the aux cable to my phone as it now bluetooths via the navigon. Looks great too. Thanks Up! Club.