If you're not scared of loading a back up would you do me a favor and load up that #5 kernel, factory reset your rom, and see if you still have music pops? I had no issue with the music pops, and I bet if we can tell if it's an app or not we could track it down and maybe give adrynalyne somewhere to look for that problem. Just a thought. I would do it but I didn't get music pops.
I would do it, but I is scurred . This is my first day messing with this stuff and I just got everything working perfectly.
in addition to what sheepy said you could try voodoo control from the market. it has the voodoo sound enhancements.
I'm not running voodoo yet. Maybe once I get more comfortable with this whole process. CWM and recovery mode are still very scary to me and I don't want to b0rk anything up in my current state of ignorance.