audio field doesnt show up in the nodes

Hi,
the following problem (maybe I'm just too studip)
- After installing I get an "audio file" field in every node i have (site, article....). I can the the fiel in Manage field but if if creat a new site, article... I doent get a field where I could upload a file. I set all rights for audio.

In addition I'd like to know how it works to add more tahn one audio file to the audio now. i just can overwrite the file.

many thanks