How to write a listener / scheduler in Aras?

There are several ways how you can achieve this. There is an Aras Scheduler Service that comes with Aras installation CD (requires subscription I believe - maybe someone from Aras Corp can answer that one). It is a handy tool and pretty self-explanatory. It executes an Aras Method in defined time interval, e.g. every 10 minutes. You could write an Aras method that reads your directory with files in it and creates Document Items with files attached. Another way would be to use Windows Scheduler service and create an own program that embeds IOM.dll API to create Document Items in Aras.  

There are several ways how you can achieve this. There is an Aras Scheduler Service that comes with Aras installation CD (requires subscription I believe - maybe someone from Aras Corp can answer that one). It is a handy tool and pretty self-explanatory. It executes an Aras Method in defined time interval, e.g. every 10 minutes. You could write an Aras method that reads your directory with files in it and creates Document Items with files attached. Another way would be to use Windows Scheduler service and create an own program that embeds IOM.dll API to create Document Items in Aras.