The Imod might work too for you, if your computer is not near your system....
the tiny 'pods don't sound so hot. i have an older shuffle & nano, sounds thin & weak compared to my 40gb.
See if you can send a signal from you main computer via CAT5, a 50' run wouldn't be out of line. then send it into a DAC and you're done.
Search for info on the Squeezebox as well. lots of folks at AC seem to like it.