Can I play AAC file between 8m24s to 12m03s?

You could use AVFoundation to play your AAC file on iOS.
A good starting point is the AVPlayerDemo sample code from Apple:
http://developer.apple.com/library/...on/Intro.html#//apple_ref/doc/uid/DTS40010101

The above sample shows how to play back a video using AVPlayer. (AVFoundation also can be used to play audio-only files)

To accomplish your specific task (playing only a certain interval of a file), you can use AVPlayer's seekToTime method in combination with a time boundary observer:
http://developer.apple.com/library/...oundaryTimeObserverForTimes:queue:usingBlock:

 

Just pass an URL to your media file to AVPlayer (using the AVPlayer initWithURL initializer).
You can obtain an URL to a resource within your main bundle via NSBundle.
e.g.:

Code:

NSURL* audioFileURL = [[NSBundle mainBundle] URLForResource:@"mediaFilename" withExtension:@"m4a"];

 

"...read .srt file and show it on images..."

"play sound background base on contents of file .srt?"

"any more detail suggestions?"

That's some serious word salad you've got going there.


Here's a suggestion. Learn to describe your problem well enough so others can understand it.

Then do you own research, experiment with the things you find, and post CONCRETE, SPECIFIC QUESTIONS on the specific things you have having problems with.

Don't post ill-formed questions look for others to do all your work for you.

When you can't be bothered to even describe what you are doing clearly then why should others invest the time to play 20 questions with you to figure out what you are talking about, research the answer, and provide it to you?

Edit: This guy puts it really well: What have you tried

 

Love it - saved to my read later and bookmarked.