If what you had with that trial-version of DC Live was decent and accomplished your task, then why not try to negotiate a dioscount with the business that designed it? If that doesn't work, what you're looking for is to do tasks that are so esoteric and specific that you might be on a 'mission impossible'.
Are you going to be making money from your sound project? If so, you might want to reconsider trying to do this 'on the cheap'
Being a techy and an audiophile, I'm fairly knowledgable about technical aspects of recording, but for the life of me I can't understand how the same software can't be used to accomplish both types of projects. I'm not seeing the distinction.
Unless what you think you want is such esoteric software with a GUI that is so tailored to accomplish those specific tasks in a production mode? If that is the case, you probably want to talk with someone that works in the industry at a engineering studio..or the record industry.
Or is that your task and projects is/are transcribing vinyl or other media music onto CDs and want to get rid of poor equalization, ticks/pops etc, out of the music. Are you trying to fix poorly mastered media to fix recordings from older technology so the music sounds better. Or am I just guessing at your purpose.
Regardless of what the task really is, have you tried using Google to see what's available for shareware
on the Internet. I typed in keyword 'sound restoration software' and got the following hits: