Hi everyone, wow it's been a long time since I've been here, where have I been?????

I'm a proud new owner of a Samsung PN64f8500, the last and maybe the best of the plasmas. After a bit of binge watching I'm now sorting out the best way to integrate this into my system in the most efficient way possible, but most importantly, keeping the integrity of my stereo audiophile system. Here's my stereo setup:
Mac-mini running Audirvana to
Stello U3 (via USB) to
Audio-gd Ref. 7.1 DAC (via S/PDIF) to
Luminous Audio Axiom Signature passive volume control to
Marchand XM-9 active crossover to
two BEL1001 MkII amps to
two Avlar Prodigy speakers
I know, nice, right? I don't want to screw this up, it's a beautiful sounding system. So now I have this TV with all these wiz bang features that I'm not really all that interested in, but would like to use easily if possible. I could see going multi-channel eventually, but I'm in no rush and am happy with stereo for now. The biggest drawback to multi-channel to me is that i'd want 5 identical speakers and I don't have that kind of room if I keep the Avlars, which I'm keeping!
OK, here's what I've got so far with the video portion of the system:
Samsung PN64F8500
AT&T Uverse cable box and recorder
Monoprice HDMI switcher with opt and coax digital outs
I'll be adding a blu-ray player, probably an oppo 95 or 105 (anyone selling one?)
and using the Mac Mini for video server
I've got one HDMI cable and Ethernet cable going to the TV and one Toslink opt cable coming back from the TV into my DAC. This works well because the TV forces a stereo PCM signal through the Toslink. I'm also feeding the DAC the coax digital (rca) from the HDMI switch, but so far it's not seeing it. I think I can force the switch to output PCM and that should fix that, either way it's probably redundant seeing I have the toslink from the TV.
But now it's already clunky:
First volume control. The TV's toslink digital out has no volume control at all so I'm dependent on The Axiom passive volume control and it has no remote. I'd like to find a way to control volume via a remote.
Second, the DAC. There's no remote for the DAC either, so I have to manually switch inputs when I use the toslink, vs. the S/PDIF from the Stello.
Third, the Mac mini. I have to change the audio output every time I want to use it for music or for video. As you mac owners know, it's never a totally simple task. Sometimes you have to go into the Audio MIDI setup, sometimes you have to restart, etc... it's not consistent.
And then there's the question of how best to access content and control inputs in the most efficient way possible. I have one of those little Lenovo wireless multimedia remotes, but the keys are so small, it's really impossible to use, so I'm looking at full sized keyboards.
I want to be able to use the same controller, keyboard and mouse/trackpad to:
1 - Easily access my media library on my hard drives and media server.
2 - Use the Samsung as a monitor for the Mac Mini, surf the net, etc.
3 - Use the SMART apps (I know some won't accept keyboard entries).
4 - Use the AT&T Uverse options
5 - Use the Blu-ray player
6 - Use the HDMI switcher
7 - control audio patching and volume.
It seems obvious I should be getting into Harmony, I see they have a keyboard now. But I've not had much luck with Harmony products, they've been inconsistent. But that was a long time ago, maybe they're better now?
Samsung makes a keyboard that has it's SMART controller built into it, but I don't know if that will talk to the mac. I've heard it's not so great.
I do have an ipad I could use if there's something that would work with that, but I need some help thinking that through.
One idea I have is to get an Apple TV and dedicating the Mac-Mini to music only duties. Anyone know much about Apple TV?
I like the idea of keeping the Mac Mini just for audio but if I don't I know there are a lot of different media streamers. I've used PLEX in the past and XBMC. And while they're beautiful interfaces, I find it much faster just to go into the finder, find the file and drag it into VLC.
And finally it was suggested to me to just get a cheap AVR receiver instead of the HDMI switch. That would solve a lot of problems but it would have to have a pristine analogue pass-through for the music. Ideally, it would be able to take it's own volume control out completely, pass along the analogue stereo straight to the Axiom when playing music and then engage it's volume control for video.
It still seems a clunky way to go, but I want it all, a convenient interface and keep the audio purity. I don't know of a reasonably priced AVR that can claim an audiophile level preamp, is there?
I think that's about it. I'm probably forgetting something, but anyway, any thoughts or threads you can point me to? THANKS!!