Put your vinyl on your iPod as well.
If you have a cd recorder it's a doddle, if not, but like me you have a mini disc recorder (I have a MD deck which makes life easier) then you....
1) Record the vinyl to MiniDisc and insert the track breaks - Analogue now converted to digital .
2) Plug your MiniDisc player in to your computer. I use an iBook and have a gadget (can't remember name) that cost about £30 and lets you plug in a MD player via a male to male lead, and then plug the gadget in to the iBook via USB.
3) There is some simple recording software that comes with above mentioned gadget that will allow you to play MD and record on the computer as an AIFF file (bloody huge file, about 10 times lerger than an mp3).
4) Open iTunes and import the AIFF file, then use iTunes to convert from AIFF to mp3.
5) Delete the AIFF file.
Takes a while but I just did it with the LPs and 12" that were rare(er) and can't be replaced without spending more than I would be prepared to these days.