Hi,
 Please pardon my abject ignorance. I never put a CD to my hard drive and don't immediately see how to do it.
 I have made a CD of my own on different computer and the computer crashed and I don't have the files anymore. I copied the CD and hear tics in some tracks now-maybe from the scratches in the original. I have Izatope denoiser software. In order to get it in Izatope I have to have the CD in a directory to select the track. I want to try to fix that one track and reburn the whole CD. I see that Sonar can rip a CD and I did do that to one track. Too bad it played so loud I might have to retire as my ears are ringing after 3 days now. Anyway, is this the only way to get a CD into my computer. All 14 tracks ripped into Sonar? Or is there a simpler way- and Izotope needs WAV. files among others. Not .CDA. All my experience has been sporadic over 15 yrs and mostly just play not record as a hobby and I forget what to do.

You can use other programs to 'RIP' your CD, but SONAR should import them fine onto individual tracks. Then you can mute each track that you don't want to process and export one track at a time after you are done editing. Pretty straight forward. Don't get skeered.

Hi,
 Thanks much. I guess I was overthinking it. I guess it just takes time to get it in and out again. I would use Nero . I see that Sonar doesn't have choice of space between tracks.

I use Wave Lab Elements which is about $80 It will import the Waves and create a file for each song. It will run isotope plug ins too.  I think Audacity is free and will do the same. 

If the issue with the CD is a scratch in the plastic (not a nick in the label side, which can be the media itself on older discs), you can polish the plastic to remove scratches (if not too deep).
 
Quick fix 1 - Clean the CD with soap and warm water, then apply turtlewax (car wax) to the surface, and buff it with a non-abrasive cloth. For minor scratches this will often fix them enough to read (which is all you need).
 
Option fix 2 - For isolated scratches, can use brasso and gently rub with your finger. It will "haze" some, but remove the scratch. Rinse with soap and warm water, and apply turtlewax as mentioned above (armorall works for this too).
 
Option fix 3 - For scratches on an entire disc - (You can also polish plastic with brasso to a mirror finish this way) - using a newspaper and brasso, use a nice flat surface where you can move the disc 6-8" per stroke and pool brasso on the newspaper and lightly rub the disc on the newspaper. Rinse the disc with dish soap and warm water when finished to remove the brasso. Final buff with either turtlewax or armorall.
 
Again... for some discs with "metallic" label sides, that is the media, so be careful not to scratch that side of the disc!