Actually, setting up the Mac to play music isn't difficult and once it's setup, when I was paying a lot less money for power, I used to leave my gear on all the time so any time I had a moment, I just used the app to select my music and began playing from my entire library. I spent less time selecting songs and listening vs with my analog system which required a ritual of cleaning :)
The difference is with tweaking. If you want the best performance squeezed out from the computer, Mojo Audio is one way to get about it. You can also do simple stuff like making sure the music storage hard disk is on a different bus/interface from the audio (to the DAC). Again, the setup is only done once and you can benefit from it for a long time.
If you want someone to do the optimization for you, have a look at the Aurender.
The difference is with tweaking. If you want the best performance squeezed out from the computer, Mojo Audio is one way to get about it. You can also do simple stuff like making sure the music storage hard disk is on a different bus/interface from the audio (to the DAC). Again, the setup is only done once and you can benefit from it for a long time.
If you want someone to do the optimization for you, have a look at the Aurender.