This is what I use:

KVM: https://www.ebay.com/itm/Linksys-ProConnect-K … pMAAOSw5cNYP0jG
Audio: https://www.ebay.com/itm/AV-SELECTOR-TV-VCR-D … -8AAOSwMmBVh1wX

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Audio can be done with a DPDT switch. Leave grounds attached and switch the left and right channels (tip and ring on a phono plug, center conductors on RCA plugs).

I use a standard PS/2 KVM on my workbench ($10 from a computer recycling shop) for the keyboard, mouse and monitor. For the audio, what I actually did was plug the speakers into a "Y" adapter that separates the left and right channels, then I run mono cables between the adapter and the two computers, so audio from one computer comes out one speaker and audio from the other computer comes out the other speaker. Yes, doing it this way means you lose stereo audio capability, but it's a relatively simple and switchless method of sharing one set of speakers with two computers with no loss of audio volume or risk of feeding back from one PC to the other if you lack a KVM with audio support.

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MySpace wrote:

Thank you guys for the tips! About the audio I have an idea, but it will probably lose some volume, and it won't look that great […]
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Thank you guys for the tips!
About the audio I have an idea, but it will probably lose some volume, and it won't look that great:
Speaker jack male plugged into an audio jack female which is connected to both computers doing a "Y" split.
Then I would add two switches, so if I want to use my main pc I could just switch off the part that goes to the second computer and switch on the part that goes to the other pc.
But I didn't made anything like that before so I have no idea about any side effects that will happen to the speakers.

That's very similar to my setup I mentioned above, but it retains the ability to do stereo audio. It shouldn't affect the volume as long as you remember to turn off the switch on the audio cable connected to the computer you're not using. Turning off the switch will also prevent the audio signal from feeding back into the second computer. I don't know if such feedback would possibly harm the second computer or not, but it's better to be safe, especially if one of the computers you're using has an old ISA sound card with amplified output.

I know at least IOgear, (and I'm sure others) makes a kvm that includes audio. I have one. It's one of about half a dozen kvms I have. Let me see if I can find it...yep, lots of them and fairly cheap:
https://www.ebay.com/itm/IOGear-GCS612A-MiniV … -0AAOSw74FXOm1S
https://www.ebay.com/itm/IOGEAR-GCS612A-MiniV … McAAOSwZqZZ-LOl

Well i have one 4 Ports and one 2 ports KVM(cheap ones, usually from china) and i don't use it, idk if it is the cables included but the signal is GREATLY degraded,not sure if it is because of a cheap cable, or the kvm itself is cheaply made.

.legaCy wrote:

Well i have one 4 Ports and one 2 ports KVM(cheap ones, usually from china) and i don't use it, idk if it is the cables included but the signal is GREATLY degraded,not sure if it is because of a cheap cable, or the kvm itself is cheaply made.

Cheap KVMs will do that. I have one or two of those as well and once you're running higher resolutions, you can see ghosting, etc.

On the other hand, a well made KVM like the Cybex one I bought nearly 20 years ago, still displays well over the 1280x1024 spec it was designed for (I've run as high was 2048x1536) without flaws. Of course, this was a $900 KVM back then.

I run a cable like this from back of each of my PC's to under my screen.

Then I just manually plug the speaker into the end of which ever PC I want.

It's not the most elegant, but its cheap and easy, especially when you have about 8 Pc's some with multiple sound cards

.legaCy wrote:

Well i have one 4 Ports and one 2 ports KVM(cheap ones, usually from china) and i don't use it, idk if it is the cables included but the signal is GREATLY degraded,not sure if it is because of a cheap cable, or the kvm itself is cheaply made.

I also had that from cheap and long cables plugged into my Compaq KVM. Swapping them for decent cables about the same length fixed it.

What about this one?

http://www.aten.com/global/en/products/kvm/ca … a/#.WjvIQuRrzIU

It looks like just what you are asking for. I don't know the price, but shouldn't be expensive:

The one below is what I use happily for years, but I suspect it's price might be higher than 70EU (it definately was, when I first bought it about 3 years ago). It supports both PS2 and USB.

http://www.aten.com/global/en/products/kvm/de … b/#.WjvKUeRrzIV