transfer audio tapes

Solution
There aren't 50 ways to transfer analog tapes to digital: connect your tape deck to your sound card / on-board audio, play the tapes into audio recording software, do audio clean-up if desired/necessary, cut the track into separate songs if desired, burn the resulting files.

It'll take a while. If your tape deck can play at 2X speed and you don't mind sacrificing some playback quality, then you could try your luck with recording at 2X the sample rate and change the sampling rate of the recorded waveform once done.

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There aren't 50 ways to transfer analog tapes to digital: connect your tape deck to your sound card / on-board audio, play the tapes into audio recording software, do audio clean-up if desired/necessary, cut the track into separate songs if desired, burn the resulting files.

It'll take a while. If your tape deck can play at 2X speed and you don't mind sacrificing some playback quality, then you could try your luck with recording at 2X the sample rate and change the sampling rate of the recorded waveform once done.
 
Solution
Your options include using one of these
https://www.bhphotovideo.com/c/product/1312109-REG/tascam_cd_a580_multi_purpose_cd_cassette_usb.html?ap=y&gclid=EAIaIQobChMInvynwou92wIVlFqGCh1tDAy-EAQYAyABEgIG5fD_BwE
to make direct CD copies of the cassettes.
I think using a computer makes more sense. You can rip each side of the cassette and then splice and edit them to fit better onto CDs. You will also have digital files you can playback without using CDs. Do the rips in at least 16 bit 44.1khz FLAC or WAV files. You can always convert/copy them to mp3 files so you can use them in your car on a USB stick. They can be streamed all over you house too.
You can connect any cassette deck to the line input on your computer. Audacity is freeware that works well to rip and edit the cassettes. You don't have to monitor the rips this way since you can edit out any blank spots at the ends after you are done. Just as easy to cut 10 seconds as 10 minutes.