My entire music library, thousands of albums, 10s of thousands of songs, is stored on an external hard drive, which I play through iTunes on my Asus laptop which is connected to my Yamaha RX-596 stereo receiver via the headphone jack, and on to a pair of MTX and a pair of Boston Acoustic speakers. Since slowly becoming completely digital I have become increasingly disappointed in the lack of sound quality compared to that of when I was strictly playing CDs. I am not sure what format all of my files are or if they are compressed or not or were ripped lossless etc. What I want is to make my system sound better. I play music daily, it is an integral part of my life and it needs to sound better. I am not opposed to spending money to solve this issue. I would really appreciate it if someone could spell out what steps I could take to improve what I have or even what I need to replace. Thank you in advance for any and all of your help.