I have Nero 6.6 burning software installed on a brand-new computer. I’m trying to bring in the contents of some audio cassette tapes so that I can burn them to CDs. Nero says it can do this, but how do I configure it to know where the line input is coming from? In the dropdown box in Nero SoundTrax, the only option is “SPDIF”, which I have no clue about. Any help would be appreciated.