I agree with Circular Vibes. DO NOT buy one of those USB Cassette players. They are crap.
Find the best cassette player you can to play back your tape, after you clean the heads. I still have a high end Sansui dual deck that I used a few years ago to play in a few cassettes of stuff I did a long time ago. Recorded them to PC just as I did/do with quad 8s and quad reels, through the Motu. Recorded at 24/96 and the files sound fine. These tapes had no Dolby or other NR in them, since they were home created.
Find the best cassette player you can to play back your tape, after you clean the heads. I still have a high end Sansui dual deck that I used a few years ago to play in a few cassettes of stuff I did a long time ago. Recorded them to PC just as I did/do with quad 8s and quad reels, through the Motu. Recorded at 24/96 and the files sound fine. These tapes had no Dolby or other NR in them, since they were home created.