Yo ESP! You're posting all over in a panic state here. The question is- What kind of sound card is in your computer??? If you don't have a soundcard, you are going to need one. If you do, it's got some kind of line in. Line out from VAMP to line in on soundcard. And because you are asking questions in other threads that show you are confused, MIDI is not a system for transferring music. It is a format for transferring commands about what to do with music. You can connect by USB or firewire if you have the appropriate interface. For instance- guitar > VAMP > M Audio mobilepre > USB > to computer. That would work, but for the same amount of money, you can just get a decent sound card, which will do more, in many ways. And- as has been pointed out above, your current computer has almost certainly got a sound card in it (probably a fairly cruddy one), and somewhere that sound card has a line level input. Find it, and use it. If you don't like the sound, start saving for a real soundcard.-Richie