mutitasking in ipod?

i am using the code` UIBackgroundTaskIdentifier bgTaskId; if([player play]) bgTaskId=[[UIApplication sharedApplication]; beginBackgroundTaskWithExpirationHandler:NULL];

so that when i exit my app or lock enables the music should continu开发者_如何学编程e playing.It works fine on simulator bot not on device. My ipod version is 4.0(8A293) and i think it supports multitasking so can anyone tel me what the problem is??? Or there is some problem in my device... `

Model 8A293 is an iPod 2g and does not support multi tasking in iOS4 unless you jailbreak and enable it.

http://theiphonewiki.com/wiki/index.php?title=Apex_8A293_(iPod_touch_2G) http://www.addictivetips.com/mobile/multitasking-in-ipod-touch-2g-ios-4-confirmed-video/