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Spotify is going to break every Car Thing gadget it ever sold
(www.theverge.com)
This is a most excellent place for technology news and articles.
The sound is honestly not bad, better and less hassle than an FM transmitter. There are 3.5 mm ones too that work pretty well but I had a few of them and they fail where the cable meets the cassette. I passed it on to a friend with a whole house cassette system when I got my new Cadillac