Moving fr.o.m. Nas to N-server

Hi. I have bought som "hi-res" albums via HDTracks (192/24). These albums Where downloaded to my computer and then copyed to nas. Now i wonder is there any way to copy/move these to the N-serve?  Why? Because it is the only way to beeing able to "edit"the album.....for ex. changing coverart.

Q:2. For some reason these albums for. ex. the album Beethoven sonatas..... Shows as 3 albums via N-serve app on my IPad , which is very irritatating. The same with many other classical albums.

greatful for advice or help

thanks

Magnus