It's built in - it's part of the car so I don't think we can remove it. Is there any way I can get it to work with aux in or bluetooth?

Or previous car had a tape player which you could connect with a fake cassette lead to the phone. But you can't get a CD that does that.

I have a tiny bluetooth speaker. Perhaps I could use velcro to stick it to the dashboard top. Any ideas?

It's a V-reg Toyota Yarris or something. Got it for 99p. What are these cars like?