hello people,

 i am on the verge of getting a  pair of kef r900 floor standers and an ANTHEM  integrated 225 amplifier. so far so good.What im really confused about is that i have a music in flac and mp3s either on my 128gb usb pendrive and my laptop and nas hdd. i have no CDs.so what route should i take? what should i buy to play all my flac's mp3s through either the usb pendrive or laptop or Network hard drive with the best possible sound quality to compliment my kef r900 and anthem integrated 225?? nothing above 1500 to 2000$

thanks