Home theater with hard drive music - Totally lost.

I've always been a 2 channel guy so please forgive me.

I'm trying (again) to set up a home theater for my father while I'm in town.

I just bought him a new Samsung 8000 tv (it's replacing a 15 year old rear projection!) and I already have a center channel, right, left and two rear surrounds from Sonus Faber but I forget the model.

I have ripped all his CDs to a hard drive he listens to using an older iMac.

His amp/receiver just blew up.

What do I need to get him listening to music again from his hard drive, watching DVDs and listening using Spotify?

I'm looking to spend no more than $2,000.

I'm a bit confused on 'audio streamers' like the Cambridge Audio Stream Magic system. What is this? I read a mini review and still don't understand although it noted that it can't place apple lossless which is the format all my father's CDs are and I'm not changing them all to Flac.

I'm assuming all I need is a home receiver and a blue ray player compatible with 3d since his TV is so equipped.

I'd really like some type of setup that allows him to control everything from his laptop which he usually has on his lap while he watches TV. Is there any way to get rid of the imac and allow him to wirelessly control the music on his external hard drive from his laptop?

Also, if anybody knows a shop in the New York area I'm happy to pay someone to come sort this mess out. I'm losing my mind. All I want to do is get on with setting back up my turntable and go to sleep...for a long time.

Thanks in advance!