Well an Intel i5 3570k on a Z77 chipset board is a good start. What graphics card you get will be determined but what monitor setup you plan on using. Haven't done much audio work in years, aside from ripping CD's, but I reckon a decent sound card is a must.
This thread should help with that. http://www.overclock.net/t/1014902/ocns-most-recommended-audio-products
If you recording with a microphone then liquid cooling is probably the best option as its quieter, usually. If you plugging straight into a deck or amp then noise shouldn't be much of an issue. Basic recommendation to reduce noise is to remove the front 120mm fans from the case and install a 140mm fan as they quieter. You could also install one on the bottom for extra cooling.
I don't know if anyone make anything similar but I have a passive cooling Gigabyte 9800GT that is pretty great for reducing overall system noise. Not the best for gaming anymore but I reckon it'll be good in a HTPC or something used for audio production.
Once you've decided on all the components you'll be able to see what size PSU you need. In my experience its usually good to go 100-200w over what your system needs. Gives room for later upgrades and it lasts longer, it's also more efficient.