Just in time for my questions also... Yes I was very interested in using the player in the same fashion as you have tried.. Please let me know what you find..
and what brand,etc of line out cable did you use to connect to aux port of car
and... how did you mount it in the car.. any bracket brand or model # would be helpful too..
and.. and..how did it sound when it worked??
Thanks and awaiting any other news on this issue.. especially since I have already ordered one ..lol
Well I figured out how to get it to work but it's completely annoying.
I currently drive a 2007 Honda CRV with a standard 3.5mm auxiliary port.
and it's worked for pretty much every other mp3 player I own including the Cowon J3, S9, Clip+, etc.
Basically the unit must be plugged into the auxillary port before turning it on. If you plug in the auxiliary cable while the unit is on, it won't output any sound.
That's only the first part.
Once the unit is on, do not press anything(For me, I get 1-2 seconds of the song I last had playing before going to the media scanning screen) and wait for the media scanning screen to finish. If you press play or anything before the media scanning screen, it won't work and you have to start over again.
Aside from that, I'm proud to say that the DX50 does incredibly well in my car. Sounds are rich with great amounts of detail and depth.
I'm sure it varies from car to car depending on your speakers, but I was impressed by my car speakers especially since they were stock.