Building your own music pc????

[BloodStar]

As for the partitioning, if you plan to use the machine not only for audio but also for internet, games etc. It is good to make 2partitions. 1for audio, 1 for internet.
Data can be stored on other HDD, 500Gb is good for that,imo.

Scythe Ninja CPU cooler is around £35.
http://www.specialtech.co.uk/spshop/...productid=4125

Noctua fans are the bests you can have. I would suggest you following:
Noctua NF-S12-800 120mm Case Fan (£ 14) - place this one on the rear of case. It has only 800rpm and 8dB noise (you dont have hi rpms fan in the rear, because there is also PSU who sucks the hot air out of case)
Noctua NF-S12-1200 120mm Case Fan (£ 14) - place this one on front side of the case. It has 1200RPMs and will blow fresh air on your HDDs, you dont need to run it on full RPMs.

Scythe Ninja + Noctua = top notch.