I'd suggest getting a decent recording/encoding package, and just capturing the input with that, and encoding into whatever format you'd like (MP3, OGG, etc) and burning to CD
Check out Audacity http://audacity.sourceforge.net/ which is legally free, you'll need LAME if you want to encode to mp3, it can do ogg natively though.
As far as working it, just get your 8-track player ready to go, hit record on Audacity, and then hit play on the 8-track player, you should hear/see the music being recorded in Audacity, when the entire 8-track finishes, hit stop on the player and recording, and then clip the songs apart (just select the segments like you'd select text) and save the individual songs, not sure if I can give you much more detail on this process (you kind of have to see it to figure it out, just drag select the song segments in Audacity (its visual, so you'll see the wave-form of the audio, and you'll know where theres gaps between songs, because theres no audio data, just blank samples) and copy/paste into a new Audacity window, and save/encode that into an mp3).
I connected my outpuit from my old 8 track player to the input on my sound card. HOW DO I GET THE AUDIO ONTO MY COMPUTER TO BURN ONTO A CD????
Tapes are getting noisy and breaking.