Still not developed

This is the second such product that I try.
The first, bought there three or four years, only worked a USB key. I had to use two days ...
It is more versatile (entries Smartphone, USB and SD) but still not to the extent technically.
I live in the country and makes 120 km round trip per day to go to work in geographical areas insufficiently covered by FM stations. Not only the sound is bad, but especially the system is unstable. Any radio station with a lousy signal prevents it from working. It would stop every 20 kilometers to adjust the frequency and thus enjoy this device? Or then disconnect the antenna of the radio?
Who were we kidding?
In short, this device is zero, and more dangerous because it will quickly exasperate you and disrupt your driver's attention.
Burn your CDs. It is much easier ...