If this is the case and you want it to keep that way, a streaming audio player as suggested above is the solution.
You have the audio on a PC, a NAS, what ever
You use the PC to maintain your collection.
You use a streaming media player like Sonos, Squeezebox, etc to access the audio on the PC/NAS/etc over the network.
The media player is close to the receiver and connected to it by RCA or digital.
A couple of players can be found here: http://www.thewelltemperedcomputer.com/HW/DAP.htm