I need to put itunes on that computer and also some software so I can rip my CDs in ALAC format. Is that right?
Correct.
Or is some other format preferable?
.wav format is superior, however you lose the tags and album art. If you only care about sound quality rip to .wav.
And is JRiver for apple my best bet? Or something else? (My cds are not SACD but just regular cds).
I recommend either Amarra or Audirvana. Both work with iTunes.
-Can I use the Mac “superdrive” to burn CDs or is another piece of hardware preferable?
you can , but it is better to use an extern high quality USB drive with C2 error correction capability.
-Then I use a digital cable to connect the Macbook into a DAC and that runs into the amplifier? Sounds simple. Is there anything I am missing?
you can, but it will not be pretty.
A better result is to move the Master Clock out of the computer and into an external device that can deliver lower jitter. The device of choice is a USB converter, such as the Off-Ramp 5 or Diverter HR. The jitter of this digital source is MORE IMPORTANT than the DAC.
http://www.empiricalaudio.com/products/off-ramp-converter
http://www.empiricalaudio.com/news-and-reviews/off-ramp-converter
This connects with a USB cable from the computer to the USB converter. Then coax from the USB converter to the DAC. The DAC can be a SS receiver or SS processor as well.
You can also just buy a USB DAC and use the USB converter inside that DAC, but it will never be as good as the external USB converter powered from a high-quality independent power supply.
-Is there a disadvantage in terms of sound quality in using the ipod as the source (rather than the laptop?)
No, because the master clock in the iPod is not that great. You can improve it by using a digital docking station like the pure i20 ($85 on Amazon) and then drive that to a reclocker like the Synchro-Mesh to reduce jitter. If the Synchro-Mesh is powered by a good supply like the Dynamo, it is world-class, however the USB converter will still be a bit better.
http://www.empiricalaudio.com/products/synchro-mesh
http://www.empiricalaudio.com/news-and-reviews/synchro-mesh
Will ALAC files also play on the ipod?
Yes, even .wav files will play. This is what is on my iPod.
-If I also wanted to use an internet radio service like Sirius or Sonos, is there any way to have that sound relatively good?
Just achieve the lowest jitter possible by using an Off-Ramp 5 or Synchro-Mesh and it will sound great.
Steve N.
Empirical Audio