Before I begin, I would like to apologize if the question has already been asked (I did try a search) or if it is stupid for reasons I haven't yet realized.
Starting off with some background, until recently I kept my music collection in Sonicstage with the atrac3 file format (Don't stop reading yet!). I was forced to do this by my old sony player, one that I lost several months ago.
I leaped at the opportunity to change the way my computer handles its music. Eventually I decided to switch from Sonicstage to Media Jukebox (14) with the thought that if I like it enough I may eventually get the full media center. Clearing out a weekend to re-copy stuff onto my harddrive, I then proceeded to copy my most listened-to cds into flac format using Media Jukebox. And on this computer I have been greatly pleased with the current status of things.
However, I also like to have a music collection on a more mobile computer, one that simply doesn't have the unlimited space that seems to be requisite for the way I copied my cds. I would still like to have my lossless master, but I would also like a version that takes less space.
So the question is, what is the easiest way to start off with a library of flac files, and create a separate library of ogg vorbis (Or other lossy format) files? Or, alternately, is there another way to lessen the space taken up by my collection (other than deleting stuff)? I do know that it would be possible to re-copy all my cds, but in all honesty even though I only did my most listened-to stuff, I dread the possibility of recopying 70 cds.