That seems to be the easiest way to get a line out signal besides buying a SendStation Pocketdock. It's only something like 25USD+shipping, though not as fun or cheap as making your own cable. I wonder if this will allow you to listen to music while the phone is on, since I could make neither heads nor tails of all the rubbish being passed around on the various iPhone forums Google gave me. The supplied iPhone dock has a line out, but that's only with airplane mode on, IIUC. Let me see if I got this right:
1) Music can be obtained with regular LODs, but airplane mode must be enabled.
2) Music can be obtained with special LODs, with the 1K resistor between pins 11 and 21 (and somehow connected to pin 30).
According to pinouts.ru, pin 21 is the accessory indicator/serial enable. With 1K between here and pin 11 (serial ground), that means there is a docking station connected. Does that mean that LODs with 1K between pins 11 and 21 can play music with the phone on? Someone please weigh in here.
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