That's a bummer, friend. I have no experience with Sound Forge so I don't know what it's habits are. I have four different audio programs on my machine so it is not a given that installing a second program has to kill the first program.
I have Adobe Audition 2.0 which is what Adobe created out of Cool Edit Pro in recent years. I recently acquired a USB digital headset mic just for experimentation. So far I have not been able to "trick" AA2 into doing business with the digital mic. Total Recorder Pro was happy to do the job for me, but using MSFTs limited little Sound Recorder with the digital headset works like a champ. Go figure.
I assume most of you have figured this out: Sound Recorder thinks the world is made of audio recordings of 60 seconds or less. Go into the program of your choice, create a file of whatever length you need just full of silence. 5 minutes. 60 minutes. Whatever size you need. Save the blank/silent file. When you open Sound Recorder, open your blank/silent file and you can record up to the length of the file. This may work well with your USB turntable. Save the recording of the records/albums to a new name and then use Cool Edit Pro or whatever you like to edit, normalize, equalize, trim the ends off and break into tracks for burning to CD.