When your wife...

My wife discovered that we need an audio system because my son is playing piano for 3 years and he needs an audio system. As long as I am unemployed I cannot afford too much.
So, my wife looking around came from a dealer with the clear idea that the best system is that one that she saw there:
Yamaha HTR-5660 Receiver for $260 and
PSB IMAGE 4T for $235.

Now, I am wondering if we can do better than this for $500. Is hard for me to believe that she went somewhere and at the first sight she came with the best system for $500.

The system it will be used for (in this order):
1. audio for TV
2. Radio listening (rock, classical, jazz)
3. DVD movies
4. auditioning DVD-audio, CDs and mp3s
5. keyboard for my son (classical piano)

So, I want to show her that an integrated amplifier and some bookshelf speakers can do better than a receiver and towers for $500.

We already have a DVD player Toshiba SD-4900 that we intend to use for playing DVD-audio, CDs and mp3s.

We live in an apartement in a building so the power is not the top priority for us. Rather quality at low and very low levels.

Anyone can help me with any advise?

Thank you very much