IOS – How to play music on both Hearphone connector and Bluetooth on iPad

You can do this in the Audio MIDI Setup built into recent editions of OSX:

1. Open up the Audio MIDI Setup application (located in the applications/utilities folder)
2. On the "audio devices" window that opens up you'll see a list of devices on the left and a little plus icon in the bottom left hand corner. Click the plus icon.
3. Click "Create multi-output device" (on older versions of OSX you may only have the option to Create Aggregate device)
4. Add the different devices you need to this new device.

You're done, now you can send audio to this new device as if it were a single audio output.

Extra side note: You can change the name of the multi-output device if you want, something like "mic jack and bluetooth speakers".

Enjoy!

What if you go away from Wi-Fi noise? The 39 bluetooth channels are splattered by the same spectrum as Wi-Fi - particularly the >=300Mbit/s 802.11n stuff and later will trip you up. It is definitely not bluetooth noise, however, as it runs the gamut from 1mW to 20mW, with most devices using 5-10mW.

Resetting PRAM will not help you.

I have used several discreet bluetooth dongles to each handle bluetooth connections. With my macbook pro, bluetooth was weak, despite not being behind alu-casing (IIRC its antenna is at the top of the screen), so I used a few in USB ports. Problem went away forever.