Was browsing ebay the other week and came across a tape that you can put an SD card in and which has codecs inside which push the sound out through the tape head
http://www.ebay.co.uk/itm/180760025621? ... 1497.l2649
Anyway, it arrived the other day. Charged it up and tried it out. With my headphones in (it also functions as an mp3 player) the sound quality was pretty disgusting with none of the EQ settings giving anything close to decent music. I was disappointed.
Anyway, I got home and gave it a roll in the Zed. The results are a lot better. There is some hiss (like a tape) and you would not mistake it for CD - it would pass for radio though once you have selected the right EQ setting on the device and adjusted the bass on the stereo a bit.
It comes with a little remote control which allows you to change tracks with it in the stereo and other bits and pieces.
In summary would be that its a great idea and if a bit more cash had been put into the hardware and digital analogue conversion process it could probably have been a more effective piece of kit. Its not going to replace your CD multichanger, but it does provide a nice extra option for long journeys / when you need a change. For £10 delivered you can't really go wrong.
Hope someone finds that useful.
Shinjuku