Can anyone here explain the difference between songs that are mixed for iTunes vs. CD/radio quality songs?
I've been playing iTunes songs on my stereo system and they obviously sound pretty crappy but I want to understand why exactly. I know that with mp3 or aac files, quality is lost as a result of compressing the data. But are they actually mixed/mastered differently from CD/radio quality songs as well? For example, I've noticed that when I play iTunes songs on my stereo system, it sounds really muddy and the bass drowns out everything including the vocals. When I play CDs, everything sounds perfectly balanced.
Also, i don't know if anyone would have an answer to this but... is there any way I can get my iTunes songs to sound better on my stereo system?
Help a noob out
Edit: the bold is what I'm really curious about.