Thanks again. Looks like I'll be giving this a shot. The key thing is that there will not be any kind of heavy usage. Two people in our house - really only 1 client for the media piece at a time - primarily the Roku but occasionally a tablet but never two at once. Same with the file server. I'd say ...

Thanks for the responses so far. Let me clarify my situation and maybe that changes things. First - I just wanted to know IF it could be done. That is, can the OS have two programs. Sounds like it can. Second - for Plex I would not be doing any transcoding. I don't do that now. It's all direct play....

I intend to buy the Raspberry Pi 2 to replace my old PC currently used as a Plex media server and file server. I'm not at all new to computing; comfortable with command line programming; low level of frustration etc. Willing to spend whatever time it takes to read up on how to make it happen and the...