The hardest part is finding an old reel-to-reel that ain't gummed up... My old TEAK sync-sound is gummed up... Yeah, it plays but drags...
Sony makes a CD burner that will accept analogue "IN"... I got one... It's also gummed up???
The main thing with old tapes is that ya' need to run 'um back and forth on fast forward about a half a dozen times before they will sound *okay*...
I learned this by findin' an old tape from the 60's with about 15 songs I recorded (didn't remember any of them, but that's a different issue...)... That tape hadn't been played in 40 years but -- hark -- not only played but sounded okay...