I think your question would be based more on Hardware than software as if you were 'ripping' from discs, then you would need a disc carousel of some type to switch from disc to disc. If your question is to 'encoding' which is the process 'after' the individual disc has been 'copie' to your PC's hard drive then many encoding programs already offer a cue feature for multiple encodes during a single session.
You will need to identify what file format you want your media to be in. This should/would be highly dependant on your playback device.
You will need to identify what file format you want your media to be in. This should/would be highly dependant on your playback device.