Okay, to cover the big picture:
1) 10K is a decent budget.
2) Understand that $1200 will get you a decent AVR that will provide quality sound. If you are willing to wait until the model change later in the year, this would be ~$900. Ampliofication is a mature science and unless you select speakers that are very demanding, an AVR will cover the bill. However, AVR's in this price range will have pre-outputs so if you currently have good amps, you can continue to use them, if you like.
3) For a CD/DVD/BD player Oppo is king and you can select whichever model fits your needs, or if you want to go budget, you really won't lose much if you just go with a Sony BD player.
4) I don't know TV's/projectors well, but $2000 should cover that reasonably well.
5) So, that ballparks you at $6000 for speakers. Magnapans are a tough act to follow! Martin-Logan's electrostatics are nice and have decents "sub/woofers" built in for full range, however, they may push the $6000 limit depending on your choice. Also, they have a small sweetspot and are not conducive to groups experiencing the perfection they offer in that tiny sweetspot (but I presume you know this from your Magnepans).
6) For streaming music, I am a fan of Pandora because it is ridiculously easy to develop your own profile such that you have random shuffle of music tailored to your preferences. It takes about 2 years, IME, to really get things very good. The downside to Pandora is you cannot play a specific song on demand, nor can you play an entire album. I don't mind that because I can do that from my CDs, or simply play from YouTube. DO you currently have a Roku or other streaming device to access Hulu or Netflix, etc?
Item #6 above is probably the biggest decision you need to make early on as it could effect your budget depending on how much media you want to store (storage is pretty cheap, so you probably have no reason to compress files to MP3). I proposed what I know and Buknekked proposed what he knows (and he may know mine as well). There are several good options and I only know mine so am in no position to say mine is better, only that it works well enough for me that I haven't looked at other options.
I would suggest you provide something in the way of your location in your avatar box. I understand you might not want your ID/address to be known, but at least a state or maybe for one of the skinny states, specify east/west or north/south.
No guarantees there is someone in your area willing to help, but if you are in Georgia where I am, I could give you a demonstration which would save you a lot of time developing a real-world understanding of how it works and what it can and cannot do.