I have digitised vinyl LP's on a PC using a hi-fi amplifier with a phono pre-amp. I simply took the tape out on the amp to line in on the computer. The signal to the computer seems to come straight off the stylus as changing the volume on the amp has no effect on the recording. Perhaps that would work on a RiscPC too. The other advantage of this approach is that it has enabled me record *anything*, such as radio that will play through the amplifier.