1) yes, I have done it.
2) maybe, need more info of what your tring to doing.
1. Can I record from my headphone socket?
2. If I plug a splitter into the line-in socket, can I record from two tape recorders?
3. It came up while trying, though slightly off subject, I hope you will forgive me: can I be logged onto one username, and have another username in a small window? (Rather than keeping on switching between users, when recording on the two at the same time. A bit like how, I hear, on a mac you can have a window of Windows open).