I believe most of the new blue ray players have Pandora on them along with Netflix. they aren't expensive. for under 100 bucks you can get a blue ray player that does all kinds different stuff. I personally use Netflix a lot, but my wife likes hulu. I think Pandora might be on there too. for music streaming i'm still using napster/rhapsody. I would explore those possibilities before you rule out the bose cinemate system. there again, you will still need some type of home internet network be it wireless or hardwired. if you go that route spend a few extra bucks if you have a cable modem and get a gigabit router. if you are hardwiring your network then also get a gigabit switch. you will need the switch to equalize the bandwidth in your home network otherwise one device might hog all the bandwidth and everything else is going to buffer. i'm actually running 2 switches in my house with a gigabit router and I haven't had any problems on my end yet. I do tax the modem pretty good though and have to replace it ever so often because i'm working the hell out of it LOL. I got through a cable modem once a year.
the 2nd HDMI output... you can get a splitter for that with a little button you can push or even a remote control to change the output. I don't know that the splitter will send the signal to 2 TV's at once though. something I use a lot of are HDMI / CAT 6 extenders. they are like 20 bucks on ebay. bear in mind they don't last forever. I actually had one burn out on me yesterday and had to order a new one. if you are going over 10 or 15 with an HDMI cable you really should get an extender and some CAT 6 patch cables. patch cables are really cheap if you buy them pre-made. I make my own patch cables since I need custom lenths, but you don't have to do that. i'm sure there are those who might disagree, because they have a better way. personally, I've had no problems with cat 6 / HDMI extenders except for well yesterday. one of them burned out on me. I been using them for a long time now though.
I know how I did my house and i'm trying to think of an easier way for you to do it, but I can't think of anything. where you are going to run into issues is your signal transfer. you have to get the signal from one place in your house to another and that's where you will have issues. its not about the equipment. its about your wiring that will make the difference.
I have seen some products at best buy that use wireless technology to do a lot of what you are talking about doing. how well does it work? I have no idea. i'm old school. I don't do wireless on anything. for me its due to my experience years ago as a gamer. i'm a believer in hardwiring everything especially communication lines. the iphones and the ipad are the only thing I do wireless in my house. everything else is plugged in.
there are people on this site that are proffessionals. they are building smart houses and all of that. i'm not at that level yet, but i'm certain that the work I have done closes a huge gap between what they are doing for the rich people and what the average person has. I have to tell you that it was a lot of work. it entailed running a lot communication wiring. i'm a big fan of cat 6 and cat 6A cable for running long distance cable runs. with the budget you are talking about you may need to go wireless in order to get close to what you want to achieve.
HERE'S SOME ADVICE IF YOU DECIDE TO START RUNNING NETWORK CABLE IN YOUR HOUSE TO ACCOMODATE THE NEEDED SIGNAL TRANSFER
1. go on youtube and watch some videos of splicing and terminating network cable. visit different sites that offer training videos and watch closely.
2. don't just jump into it. do your research. have a very good idea of what you want to do before you do it.
3. unless you are a pro it will take you several attempts to get a male jack on a network cable correctly. each time you mess up you will end up having to resplice and start over. you lose 3 to 4 inches of network cable after each attempt and it can add up. I say this because I want you to consider the benefits of running conduit first if you are planning to open up walls and your ceiling to run your cable through. you don't want to spend all that time and effort opening walls and running your cable and then after the walls are patched up and you start making your connections you end up messing it all up by running out of cable. most installers don't run network cable through conduit. they will provide for some type of means to stow extra wire somewhere, but over time you will run out of network cable from the constant splicing. nothing lasts forever. if you have conduit in your house then you can just fish a brand new network cable through and its no big deal. network cable is cheap and that's why I like it. my zone 2 system for example. i'm using cat 6 cable that was cheap. 1,000 foot roll of it for only 65 bucks on ebay and it works fine - no issues at all.
4. you really want to do your homework on this first though. there's a lot of issues to consider when running network cable. I have found that if I run it through conduit that alleviate 99 percent of all issues that can possibly come up. yes, conduit is a lot of work to install but when its in its in. you don't have to mess around anymore.
5. regardless of how you run your network cable be sure to follow a few simple rules. the emphasis should always be on preserving the condition of that cable as it came out of the factory. if you damage it the slightest bit it can fail on you.
NEVER KINK IT
always pull on it from the outer jacket of the cable and never from the individual twisted pairs (this is opposite of the way you would pull electrical wire)
if you fix it to the outside of the walls or on your base boards use some type of clip to support the cable. don't just staple it down.
never cross a communication line with a power line - always keep them separated (this is the strongest argument for using conduit I think)
there's a lot to be said about a project like this. I don't know what your background is as far your occupation and what not, but its helpful if you try to look at it through the eyes of a construction worker for example. I know i'm getting off topic, but stay with me for a minute. in most construction trades you have to REVERSE ENGINEER things in order to develop a plan. you take the idea of finished project no matter what it is and you work backwards in determining what steps you have to take to achieve the finish goal. everything from roads to high rise buildings to bridges... that's pretty much how we do it. you have to try to think like a construction worker.
so, you determine where you want all your tvs and all your speakers and then you figure out how you are going to get the signal to them. don't forget about electrical power, because you have to plug all these things in too. the equipment needed to make it work should be your last concern. it should suffice to know only that you need to get a signal from point A to point B. it doesn't matter if its speaker wire or HDMI or COMPONENT VIDEO or what it is. you just gotta get it from point A to point B. if you go with network cable its the easiest and cheapest way. network cable is bidirectional so all you gotta do is just get it installed. you worry about the connections after its in. speaker wire the same thing.
you are going to see threads on this site about how people are installing electrical subpanels and things like that - that doesn't apply to you. why? because you aren't ever going to run anything that requires it. I do have dedicated circuits for my main zone and my zone 2 systems, but i'm running some high powered equipment and there may come a point where I step it up a few notches and run some even higher powered equipment. what I have already is pretty extreme for a single family home. you don't have to go that far to do what you want to do so you can enjoy yourself. I would recommend running conduit though for your communication cables. in the end you'll be glad you did.