Does anyone know to make the "DSP" functions work on the AV2100 remote and a STR-DA333ES receiver. I've tried to "learn" them but no luck. I can't even get the power on/off to work, yet all of the functions on the "AMP" work - HELP!!

You need to learn, but it's a lot of work. Try searching past threads -- exactly how has been described.

A buddy of mine had the same problem once with his 333ES. What he found was that the 2-way IR function interfered with most of his code learning (because of the return IR transmissions).

So what he did was he went into another room to learn the IR codes into the 2100.

It didn't work too well either (could only learn a couple of more codes), so he bought himself a Marantz RC-5000.

Another buddy has the similar STR-DB930 receiver (with the gawd awful 2-way remote) and had no problems learning all codes (including DSP's) into his RC-5000.