SparkXL works well for Denoise, Declick IMO. It's been dliscontinued
(by TC - in favor of their Firewire based plug in unit) but you could
probably still find a copy. I think it was only around $700 new. I don't
believe it's available for OSX, though you might want to check that.

As for archiving LP's to mp3... I think I'd archive as AIFF or .wav files
and save a copy as mp3. Cassettes may not matter as much, depending
on how and what type of original cassette was used (and how they play
back, etc.). Although, I have to say that I've cleaned up some cassettes
using SparkXL and the resultant file wasn't bad. So, I guess...YMMV.
HTH.

From: Tony Rice
Newsgroups: rec.audio.pro
Date: Fri, 25 Jun 2004 15:42:05 -0500
Subject: dehis depop on a budget

I've looked at DINR and CEDAR but those are way way way too rich for my
blood. RayGun seems to be pretty good for the price.

What other low cost dehis, depop/crackle apps would you recommend? I'm
converting some old cassettes and LPs to MP3 for archival purposes.