I was trying to record data from my Apple IIe on a PC, by connecting the Apple's cassette in/out to the PC's mic input and headphones output. Mostly because I wantet to save some stuff, and I had no tape recorder. But I could never do a proper recording/playback of the data. The PC did record some noisy modem-like audio, which sounded OK, but the Apple never managed to read back the data properly (I think it failed a few times with a checksum error, and a few times without error).
Any suggestions? Shouldn't it be possible to do this?