The buttons on a tape deck aren't simple pushbuttons. It's a fairly complicated mechanical system: Play button pushes the head into place and locks the eject button. Stop button pulls the head back and unlocks the eject button, etc. The actual electronic buttons are buried in the mechanical apparatus, so you can't just strip out the mechanisms and have a regular set of buttons.

You'll have to completely remove the tape deck, salvage the plastic bits that go on top of the buttons, then put those on a new set of pushbuttons on a new circuit board.

>>924377
I was looking to do this project myself. I was just going to wire in an auxiliary port and stuff a blue tooth receiver. I still have a stack of cassette's

>>924479
Maybe it's cuz I'm black, but this makes me think of growing up in Brooklyn in the late 80s. Godspeed :)

>>924377
I did this to a two deck boombox I picked up a while ago.

Buy a tape deck adapotor and a Bluetooth receiver. It's basic after that.

I recommend:
http://www.amazon.com/Mpow-Streambot-Bluetooth-Streaming-Smartphones/dp/B00MJMV0GU
This thin can pair to two devices at a time and last for more than ten hours regardless of volume.

And a monster cable tape adaptor.

>>926256
Just run the wire from the deck to a discreet spot for the receiver (its smaller than a matchbox).

>>924377
There are cassete-shaped bluetooth inserts that require zero modding to use and still let you use your aging magnetic media. That would be the simplest and likely most reliable way to do a foolproof 'mod' without experience or damage.