Dr Beat: Is the interface like iTunes, where you can create playlists and play it direct? or do you need to create a playlist via a laptop, and then youcan use the controller to select the playlist?
No, you create playlists using the controller itself, you go into the music library, select the tracks you want, then you can either just start playing straight away, or you can save the list as a Sonos playlist, using a name of your choice and later select that playlist instead of selecting tracks. For example I have a playlist called "It's CHRIIIIIISTMAS!!!!", I'll give you three guesses what's in it and the first two don't count.
I have been trying to transfer my ripped CD files in iTunes folder in my laptop to my NAS (Buffalo Linkstation). I noted that the WAV files could not be transferred complete with artist and album details. Only the song got transferred and its name, but not the artist and album name/artwork.
The WAV file format does not support tags, the only reason you're seeing the rest of the info on the laptop is because iTunes is storing it elsewhere as metadata, you'd need to convert the WAVs to a format that supports tags I'm afraid.
Is ripping in AIFF better or in WAV better to put in NAS for easier transfer if i should want to from one HD to another HD?
From what point of view? As far as the NAS is concerned it makes no difference, files are files, the NAS doesn't know what they are or care.
When i tried to rip a CD on my laptop, having set my iTunes folder location to be the NAS, it said i did not have the right permission to do so. Even when i right clicked the properties of the folder to allow permission, i kept getting the same message. What did i do wrong?
Sorry, don't know, are you sure it didn't say you don't have "write" permission? Double check the permissions on the share AND on the actual directory on the NAS (they won't necessarily be the same).
Besides Buffalo, is there any other NAS that can act as an iTunes server, ie no need to switch the laptop on to access the ripped materials in the NAS?
Do you actually need the NAS to be an iTunes server or do you just want to use it for Sonos? If the later then the NAS doesn't requires iTunes server, Sonos doesn't use it.
Does the sonos sound better playing AIFF or WAV files? Or is there no difference?
That's one of "those" questions. Personally I doubt you'd hear a difference but YMMV.