I will be upgrading my home audio equipment soon but need some advice. My music collection currently consists mostly of CDs but I also have uncompressed WAVs on computer and MP3s. In the future I suspect that most of my music will be on hard disk ( probably purchased on-line and downloaded from the likes of i-Tunes). And then there is digital radio.... My point is that I want to future proof for all these formats (and possible others) and still maintain high quality play back by pumping them through my hi-fi. So what do I need for this? Will a DAC with multiple inputs suffice (one for the CD transport, one from the digital radio (or does this go direct to the amp?) one from my PC? Or do I need some other bits of equipment too? Not really sure what the issues are or whether I am asking the correct questions but hopefully someone can help me out?