Instruction: Answer the given question using the supporting document.

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Question: Can I use my Latitude E6410 laptop to stream Youtube into my Harman Kardon 3490?
Document: After careful research I selected the HK 3490 to replace a Kenwood separate amp-preamp-tuner system from the 1980's that finally kicked the bucket. I don't care for the popular home theater systems that dominate the market these days. I had an Onkyo home theater system that ran awfully hot and didn't have the clarity of the Harmon Kardon. I have a large digital music collection on my desktop computer and use an Apple Airport Express to wirelessly stream music to the receiver.
Basically, you have to utilize a subwoofer with low-pass adjustment capability. The main front speakers will run full range unless you use an external amplifier with a low frequency filter or similar arrangement (3490 as preamp in this case). It definitely takes patience to get subwoofer and level adjustments just right.Final thoughts:  The Harman Kardon 3490 is a great deal for those looking for a nice 2 channel or 2.1, 2.2 receiver. Will it sound as good as separates?
Most of my Amazon-stocked orders arrive the next day even with standard shipping. Now how great is that for sating your impulse-buying urges? Dangerous? Yup.Just a couple of other quick thoughts on this unit. My input sources are laptop iTunes library, ion turntable,  and iPod on occasion. I don't currently stream or XM on this HK unit. Speakers are a new pair of Sony SSF 6000's (also an Amazon purchase) and an Onkyo powered subwoofer.
I may even get out my turntable, as it has a pre-amped input for that. It appears to be a good, solid unit which I expect to use for a long time. Good job, Harman Kardon!
I've been with Harman Kardon since I built, from a kit, a stereo amplifier during finals week in 1962. It still works!! I'm now using primarily the HJ-3490 and I like it as much as my very first HK. Great products.Goose
I ordered this receiver to replace my old Pioneer SX-828. I figured that harman/kardon was great brand name, and was hopefully something I could trust sound wise. I do consider myself picky when it comes to sound quality, and that means the world to me from a receiver. Hooking up the HK 3490 is easy and pretty simple, as most receivers are.
As others have mentioned, the remote control is quite large and many of the functions are inoperable with non-Harman Kardon components. But that is really not a knock, it does what I need it to do and there is little chance I will misplace the remote. Overall, I'd say the HK 3490 is an incredible buy at $318 and would highly recommend it to anyone looking for a 2.1 stereo receiver.
I was looking for a decent stereo receiver and discovered the Harman Kardon 3490 after scouring AV science forum and other audio sites on the web. The 3490 is also well reviewed here on Amazon. With 105 reviews as of 6/22/2011 for the 3490 it gives the potential buyer a variety of feedback both good and bad. Items with only a few reviews aren't going to tell the reader much.
I think I speak for many when I say I never want to have 7-8 speakers in my listening (living) room. With the 3490, Harman Kardon updates the classic 2 channel receiver for the digital age. Just plug in your CD quality digital audio source (Airport Express, whatever) and the best speakers you can afford and listen to the music.
Trying to find a good stereo receiver in an ocean of surround sound receivers was a real challenge. I am happy to say all the research paid off. The Harman Kardon HK 3490 is amazing. I have it pushing 2 JBL Northridge tower speakers with 2 10" woofers in each tower. The most unique thing I can say is I CAN NOT GET THIS RECEIVER TO DISTORT!
Answer: on further thought i think patrick and connie are both right with regard to my suggestion. what i might add is run the hdmi to your tv...if your tv has an audio out (audio monitor out) run that to an input on the 3490. i agree that the headphone out on the LT is likely too low of level to drive the 3490