Anyone love TIDAL lossless streaming like I do?

Someone help me. I have an old Mac Mini (2009, version 10.5.8). 
I have 3 problems:
1)  Tidal says lossless is only sent via the "hifi" setting, and Google chrome is needed for hifi. I can't get Google chrome on app store cuz 10.5.8 won't accept it. So should I download 10.6 (but doing so might result in a loss of items or music from my mini). Or should I take this opportunity to get a newer, faster mini with SS drive?

2) Can I control Tidal from my Android phone while my dac plays Tidal? Can I control volume from my phone too? If I have to get up and change music from the mouse and keyboard then forget Tidal.

3) My phone "pairs" with my computer but my computer (or airport express), can't pair with my phone. The computer sees the LG4 phone, but won't connect.

Alao, do i run a hard wire from my airport to my computer? 

Sorry for all the questions. I'm just pretty stuck here.

If you are having buffering issues, you don't have the throughput.  You say you have 'decent' speeds.  Decent is fine for spotify and MP3s but if you want to dance with Tidal, you need 'fast' not 'decent'.  Tidal is the real deal. All else pale. If you can't run Tidal, fix the shortcomings in your system so you can enjoy it.  .

I bought a brand new Mini and new ipad. I get "hifi" quality on Tidal when using the computer and monitor. However, I can't control Tidal with my ipad. When I choose tracks with the ipad the sound comes through the ipad's speakers only. 
My ipad surfs the internet just fine as it and my new Time Capsule "see" each other perfectly.  I just can't control Tidal with the Ipad and make the music come through the main system FROM THE IPAD.
What am I doing wrong?

@devilboy How is your ipad connected to your main system?

@devilboy Ok perhaps some clarification, do you mean an Auralic Aries Mini? If so you need to download the  DS Lightning Server app from Auralic onto your ipad, and then you can control Tidal via that app. I hope that makes sense.