Rubbersoul:

If you have an IMac, you have almost everything you need for a media server. You can use it along with a wireless router (e.g. linksys and others) and a Squeezebox to feed into the 990. Use Apple Lossless compression on ITunes and you are there.

With a Squeezebox you can also stream Internet Radio without your IMac being up.
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Living Room 24x18 open 1/2 flight up to a raised dining room/hall 24x12
Outlaw 976 pre-pro running 5.1 system
Outlaw 750 for Artison Masterpiece LCR and 2 NHT SuperZeros rears
Velodyne Servo FX-1200
LG OLED65C8PUA via HDMI2 to/from 976 HDMI ARC
Roku Ultra
Samsung BD-D5500 BluRay
Amazon FireStick 4K to 976 Aux HDMI input for Amazon Music Ultra