I am working on an music application and after long testing I have came to the conclusion that for the firs run I have to Load in the XAP File the Levels Data instead of downloading it from a web service because it is faster and not so time consuming. 

My question is if someone knows a method to read the file listing inside an application folder. 

I have written a method that copies the data from one folder to the LocalStorage of the application (IsolatedStorage) and all I need is a way to read the content of the folder. 

I have to mention that this is my first app for windows phone.