How to play audio from two sound sources through one speaker?

How to play audio from two sound sources through one speaker?

Added (1). I play my xbox one through a computer monitor. The sound comes out of a monitor, through a 3.5mm wire which is connected to my speakers. I want to set it up so I can play music on my iphone, and hear the game sounds through my speaker, but I'm not sure whether a simple splitter will work. I tried a headphone splitter, but that didn't work, so I would like to know if it is a 100% guarantee that a general splitter will work for this, before I go buy one online.

Iphone help needed. Can't receive calls from one specific number?

Iphone help needed. Can't receive calls from one specific number? - 1

Added (1). My daughter can't receive calls from me, but can call me and receive my text messages. We checked to see if she has do not disturb on, but she doesn't. We can't figure out how to fix this.

Have a blocked lock out 4s Iphone, can I use it?

I aksed this once before but go no response, It might have been because I put it in the wrong category. But I bought a couch now over 2 years ago. Just before Christmas. Over 1 year later, the couch broke, and I threw it away. When I was cutting it up I found a 4s Iphone I tried to turn it on and it was blocked out. So now what?

Which is better a regular iPhone or a phablet iPhone (aka the 6 plus or plus versions)?

I'm looking to get a new phone and need suggestions

IPhone is locked and frozen?

My iPhone 5s is locked and frozen p. I can still feel the vibrations and stuff. I can't reset it because my home button is broken. Anything I can do?

My App Store is not working at all. I can't search or download anything. Why's that?

My App Store is not working at all. I can't search or download anything. Why's that?

I CAN't CONNECT TO GAME CENTER?

My iphone is iPhone6plus and i didn't use it for a month, then when i opened my phone i saw that I can't connect to Game Center anymore.

Storage almost full from Tumblr?

Every time IIm on The Tumblr app, I get a notification saying that my storage is almost full. I have an iPhone 5s with plenty of storage left on it. Any ideas why this is only happening when IIm on the app?

I want an iPhone really badly and I'm done with my moto g3?

I have like $800 of my own money to spend and I want an iPhone 6. And the AT-T bundle I want is 55 a month. Is $800 enough to buy the iphone 6 plus the AT-T bundle?

IPhone 6s Plus screen glitch problems?

My iPhone 6s Plus is approximately a month old and all of a sudden without rhyme or reason the screen is totally glitched out and unusable. I do not have apple care or phone insurance. If I take it to the Apple Store will they give me a new one?