Currently I have a MBP housing my iTunes library with only my audio files on the internal HDD. Video files are stored on a USB HD connected to an AEBS. This also is the source of iTunes for the aTV and airplay for my home stereo (using an AE). Recently I acquired a very old (2005?) MB. I've got it updated to the latest Snow Leopard (the last OS it will support) and the latest version of iTunes. I figure about the only thing it would be good for is as an iTunes server. So I have connected it, using ethernet, to the AEBS. I have also copied all of the audio files onto it's HDD and it is also connected to the USB HD through the AEBS. Home Sharing is turned on. So basically at this point it is a duplicate of my MBP but hard wired to the AEBS instead of using wifi (as the MBP does). So how do I manage all of this? Do I delete the iTunes library from the MBP and make the MB have the only library, then share it with iTunes on the MBP? Can I have both going for a awhile until I am comfortable the MB is going to work out? (I am a little concerned about lag using sharing to feed the MBP, but that may be an unfounded concern.) Then I assume I can go to the aTV and point it to the MB iTunes? I would appreciate any guidance on how to implement using the old MB without totally mucking up my currently well performing system. Thanks.