Assuming you take care with a music server - dedicated machine, don't run other programs on it, plenty of disk space, etc. - you should easily be able to put all your music on the server, have a backup strategy that fully protects you, and be able to interact with your music more flexibly than ever before. I would suggest a lossless format, and I would store the music on dedicated external USB drives. Support for any part of that setup won't go away for a long time.
Keep or sell the CDs? There are possible legal issues, probable moral issues, and a loss of ultimate security of your collection if you sell. To me, though, this is a completely different question than whether everything should be on a server and accessed that way.
Keep or sell the CDs? There are possible legal issues, probable moral issues, and a loss of ultimate security of your collection if you sell. To me, though, this is a completely different question than whether everything should be on a server and accessed that way.