Check out my rigs below for full specs, but I have an MP3 server with 96gb of space, currently ~66gb full. Not exactly sure how many songs that is, I'll have to figure out how to check that (mmm, new linux command...mmmm.)
Comprising the 96mb are:
(1) 60gb IBM 75gxp ATA/66
(2) IBM Ultrastar 18ES
I'm going to sell the two 18ES's on ebeigh and buy another 60gb 75gxp (or hopefully I can find a 60gb 60gxp in stock somewhere.)
85% of the songs are ripped from CD, anywhere from 128 to 256 (I kept upping the bitrate as storage got cheaper .) The rest are from net sites (legal ones like Epitonic and EMusic.)