We have some Syris (model RD200-M1) cardreaders with a USB cable. It's a model where we put our company ID card on to read our company registration number. I wonder if there is some code out there explaining how to read our card in C#.... ?

Thank you Gerry. Creating a new file, temporary, is not directly an issue, it is not a goal on itself. What I want to do is, when one audio file is playing using the output, I would like to pre-listen to another one for instance in the headphones, just like DJ's do. I wonder if I should give NAudio a try.

I wondered if there is a possibility to listen to two or more MP3's at the same time and thus mixing them to the audio output, and also handle their volume apart. I saw an application such as Virtual DJ, and I would like to write a C# Winforms application but with very basic possibilities, mixing 2-3 mp3 files, handle their volume separately, and if possible listen to the headphones separately (pre-listening) while another audio file is playing. I looked for code here and there, but the only thing I found was mixing mp3 files and save them to a new file without listening....