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Old August 9th, 2012, 04:05 PM   #1 (permalink)
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Default Play music from phone on tablet through bluetooth?

Hey, got a tricky question here that I am unable to find an answer to..
I recently bought a new car, and I´m thinking about fitting it with an android tablet for gps purposes etc.
My idea is to buy a new tablet (probably Nexus 7 or Samsung Galaxy Tab 2), mount it to my car dashboard (got an idea to make it permanent and good-looking), and run an aux 3.5 mm sound cable from the tablet to my car stereo.

By doing it this way I can use the tablet to play music and have gps voice in my in-car-stereo, but still keep the parking sensors chime and other warning sounds.
My only problem is: How do I play music on the tablet?

I first thought about using an USB OTG cable, but the problem there is that I then can´t charge the tablet, or the phone, while connected.

So, I started thinking about bluetooth.

My question is: Can I, through the use of bluetooth, stream music from my android phone (not transfer files), to a tablet, so that it plays the music from the 3.5mm audio output?

OR, another idea: Can I connect the phone, with USB Mass Storage on the phone, to a tablet and play music, WHILE, after having cut the USB cable, providing BOTH the phone AND the tablet with power?

This would probably be done by cutting the cable, and running two 12v-cables from the car to the cut cable, one plugging into the cable going to the tablet, and the other to the cable in the phone direction.


Are my ideas just utter stupid, or perhaps doable?

All help, tips and ideas are greatly appreciated.

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Old August 9th, 2012, 06:23 PM   #2 (permalink)
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Not sure about bluetooth, but I think that you can stream music between Samsung devices connected to the same hotspot. Its in the feature list for Kies Air, haven't tried it though. I do see the music icon when when I access my phone via my tablet though.
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Old August 9th, 2012, 06:33 PM   #3 (permalink)
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If anything, you'd be able to stream the music directly from the tablet to your car's Bluetooth audio. I'm nearly positive you can't stream media between two android devices through Bluetooth.

You may be able to do it through USB as long as the tablet supports USB hosting (I think the nexus 7 does).

Is this what you are thinking:
Custom Nexus 7 in-dash installation makes me wish I had cutting skills [VIDEO]
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Old August 10th, 2012, 01:22 PM   #4 (permalink)
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Quote:
Originally Posted by chanchan05 View Post
Not sure about bluetooth, but I think that you can stream music between Samsung devices connected to the same hotspot. Its in the feature list for Kies Air, haven't tried it though. I do see the music icon when when I access my phone via my tablet though.
My phone is an Xperia Ray, so Samsung to Samsung connectivity is out

Quote:
Originally Posted by sdrawkcab25 View Post
If anything, you'd be able to stream the music directly from the tablet to your car's Bluetooth audio. I'm nearly positive you can't stream media between two android devices through Bluetooth.

You may be able to do it through USB as long as the tablet supports USB hosting (I think the nexus 7 does).

Is this what you are thinking:
Custom Nexus 7 in-dash installation makes me wish I had cutting skills [VIDEO]
My OEM car stereo doesn´t support A2DP (and I will not change that one since its integrated, not a regular DIN stereo).
Also, I won´t store any music on the tablet itself, I just want to play through it since that will be connected to the in-car stereo permanently.

My reasoning goes like this: I use my phone to play FLAC files to a A2DP-compatible bluetooth headset at work.
I have 32gb memory card on the phone.
I switch music fairly often on the phone, since I use it often at work.

Therefore I want to play that music on the tablet, and not have to fiddle with USB memory sticks, or transfering files to the tablet.

The phone will be connected to the tablet by either USB in mass storage mode or (if possible) by bluetooth, and I will find the files, which are on the phone, on the tablet.
I will then use a music player on the tablet to send audio through the aux cable to the in-car stereo.

I will probably end up using USB to connect the phone to the tablet, I´d just thought I would ask if I could use bluetooth, since otherwise I have to run a usb cable trough the dashboard and center console.
As it is right now I have a 12v power outlet, so if I could use bluetooth I would be set since I can then continue to use that outlet just for charging the phone as I do now.


And yes, that video pretty much nails my intentions
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Old August 10th, 2012, 07:55 PM   #5 (permalink)
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I was looking this out of interest myself. And I wasn't happy with what I found.

How to stream audio from PC to Android Device over Bluetooth - Android Enthusiasts

In a nutshell, its not possible (or at least your going to have to put in more effort than its worth) to stream Bluetooth audio between two mobile devices. The drivers only declare they are BT Audio sources, rather than a "sink" (receiver). Technically I don't think there is an issue at the hardware level, but you would need to rewrite the drivers to allow for this and add that functionality to Android itself if it doesn't support it.

While you have a noble and great idea, I think getting that much would be a huge feat in and of itself.

Let's put it this way, unless your an Android expert, it would probably be easier swapping out the radios (and I'm sure you don't want to even do that).
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Old August 11th, 2012, 02:56 PM   #6 (permalink)
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Alright, I read through your link and understand the problem.
I´m going for the USB Mass storage option instead

Let´s just hope Google fixes this along the road, my idea of Android is, if I have device "x" I should be able to play it´s files on device "y", regardless of what the devices are, be it phone, tablet, clock or tv, through wireless connection.
We´ll see if Google shares that idea in the future
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