Bluetooth advice

Bluetooth is a method of a local networking. Technically, there is no "receiver." You are coecting two devices. You need to "pair" your bluetooth headphones to your computer, which must have its own bluetooth card. There is no specific bluetooth "receiver" for a wireless mouse - any bluetooth mouse can be paired with any bluetooth adapter. I use a bluetooth mouse on my media PC with a USB bluetooth adapter. (The mouse was sold without one.)

As with any networking device, in order to work a bluetooth adapter (for example, a bluetooth USB dongle like I have) has a chipset inside that requires a driver. But the Linux keel already has many drivers built in, so some USB bluetooth dongles will work automatically. Mine did - plug it in, and the bluetooth symbol appeared. Now I can pair any bluetooth device to my PC.

I should note that some bluetooth devices like audio headphones may not be detected as audio devices by Ubuntu automatically. You may be able to pair your headphones easily, but trying to listen to music may or may not be automatic. You'll generally have better luck with the newest versions of Ubuntu.

I suggest you buy a cheap USB bluetooth dongle to start playing with. It may tu out to be very easy - like mine, it may not require a driver, and Ubuntu may automatically detect it as an audio device that you can play music through - a simple change in your sound settings to use it. You can buy cheap USB bluetooth dongles on eBay or Amazon for under $5 USB, maybe closer to $1 USD if you don't mind waiting a few weeks to have one shipped from Asia. (Not sure where you are.) The cheapest USB bluetooth dongles may have older chipsets, which means they are more likely to work automatically in Ubuntu but may also not use the most recent bluetooth standards - maybe OK but may not give you the longest range, etc. For the price, though, not much to lose in experimenting with one. Get a cheap USB bluetooth dongle to work, then maybe buy a better one later if you need more range or something.