Haven't tried an MP3 as yet. Going to do that later.
For all of that though, as was mentioned before, you would think that the head unit would at least see the SD card even though it's not able to play anything. It doesn't even recognise that there is an SD card in the slot..
I will download an MP3 file onto the SD card and see what happens.
Dave could you point me in the direction of one of these apps that I may need to convert file formats? Sorry, I'm a bit of a noob with these things.
What happened to cassettes.........