Hello to all. I play my music from a Mac streamed to a Zone Player 90 in the living room connected analog to the avr. I'm researching dacs to improve the sound quality of my music of apple lossless and Pandora. My options are the Arcam rDac, Cambridge Audio DacMagic, Musical Fidelity M1DAC, Rega Dac and Peachtree Audio Nova. In their descriptions the word upsampling is used. What does this mean? Which of the mentioned dacs is the better option for streamed music? What should I focus on? Please also give me advice with regards to cables since I'm using the one's supplied. I want to make things right and I'm going through "if I knew then what I know now I would have done things differently" with regards to the separates and avr which I also use for movies. Keep in mind that the Nova is also amp serving 80wpc. I make this point because later in the year I'm looking forward to upgrading my speakers and I'm debating if I should get an integrated amp or a more robust and powerful avr since I also watch movies.