Septemous, once you use transfer method that involves data only (no timing) like wireless, Ethernet etc. then anything on computer side of wireless doesn't matter (other than more or less general electrical noise across the room). It won't matter what type of computer or hard drive or interface or playback program (if it is bit transparent). It saves a lot of money and headache that way. The only thing that will matter will be amount of jitter on the DAC side of wirelss. Wireless receiver has to recreate the clock to transfer music to DAC (convert untimed data to timed music). Some do this better than others (with less or more jitter). I use Apple Airport Express that produces average jitter (280ps according to Stereophile measurement) but it is driving jitter suppressing Benchmark DAC1 resulting in very clean sound. It also has limitation of 16/44.1 which is OK with me. You could get something better like Squeezebox, but optimal solution would be to get good reclocker (for jitter suppression) and place it between wireless and the DAC. That way you will be free from anything in your system and be able to choose any DAC you want - NOS, OS, or jitter suppressing upsampling DAC. I'm not sure what reclocker is the best but I know that one is made by Empirical Audio (Steve Nudgent). He is on this forum and knows a lot about this stuff.
