Bluetooth speaker connects but does not play anything from M17x R3

Did a quick search of the forums but couldn't find anything.

Hardware involved: M17x R3, Nokia Play 360 Bluetooth Speaker.

Recently got the speaker and it works perfectly with the iPhone 4, Samsung Galaxy S3 and even the MacBook Pro.

I can't seem to get it to work on the M17x though.

The speaker appears to connect properly and drivers are automatically installed:

Spoiler

But it doesn't appear in the list of Playback Devices (Bluetooth Hands-free Audio doesn't connect):

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When I double-click the device, I get this error:

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Mine is a stock M17x R3 with the standard Dell Wireless 375 Bluetooth Module:

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Any suggestions? Googling the issue yielded a bunch of similar cases, but none of the solutions worked.

 

Finally got it to work. I had to grab something called the Microsoft Mobile Device Center from here: Download Windows Mobile Device Center 6.1 Driver for Windows Vista (64-bit) from Official Microsoft Download Center

(For x86 users, http://www.microsoft.com/en-us/download/details.aspx?id=14)

After installing the above, double-clicking the bluetooth device led to the usual 'Connect' button. Now I can direct all sound output to the wireless speaker.

 

Thank you for sharing the fix with us. +1 Rep for the effort.

 

Thanks. Another note: the download says 'for Windows Vista' but it works fine for my 64-bit W7 Home Premium.