I am new to iPhone apps, I am developing one application which requires playing audio songs in background that is if user exists the application also it has to playback the audio songs still user stops it. I have checked in this site for this feature but some guy gave answer that this feature is owned by Apple people for their apps before iOS4 but I found one application named “Raaga Telugu” in itunes having this same feature but still working in iOS3.0 also.
some one please help me, some help would be appreciated.
You can not do this in iOS 3.x.
From Apple’s iPhone App Programming Guide, Chapter 4 “Preparing Your Application to Execute in the Background”, Section 2 “Declaring the Background Tasks You Support”:
Start by reading this document (at least this chapter) thoroughly.