If you use Sound Forge to do the sampling there are some nice plugins out there that will let you clean up your vinyl by removing pops, clicks and scratches. The one I use is called "Vinyl Restoration."
Usually I run it through the plugin and then normalise the result to compensate for the fact that the mastering levels on many records are quite low. This is good practice for tapes too.
What business is it of yours what I do, read, buy, see, say, think, who I fuck, what I take into my body - as long as I do not harm another human being on this planet? - Bill Hicks