hi..
I have a lesson with swf sound files...it works great but on ipad sounds doesn't work .. do you have any idea how i can solve this problem?

you can try ddvideo swf to ipad converter standard,it can convert swf videos to iPad.increase/decrease swf video volume from 75db to 105db and also normaliz swf files at the same sound level.meanwhile it can keep the original video size with high quality and enjoy swf videos on your pc.very easy to use.

This following will describe a step by step guide on how to convert, play and watch FLV, F4V, SWF on iPad/iPad 2/iPad 3 at http://www.bigasoft.com/articles/how-to-play-flash-on-ipad.html

This guide applies to:

Convert and play flash video downloaded from websites on iPad 3/iPad 2/iPad
Convert flash video to play FLV on iPad/iPad 2/iPad 3
Convert flash video to play SWF on iPad/iPad 2/iPad 3
Convert F4V to iPad to play flash on iPad 2/iPad 3/iPad
Convert and play flash games on iPad 2/iPad 3/iPad
Convert and play flash animation on iPad/iPad 2/iPad 3
Convert and play other video including WMV, AVI, MKV, MPG, 3GP, WTV, MXF, MVI, WebM, YouTube, VOB, DV, HDV, AVCHD, 1080p, 1080i, 720p on iPad/iPad 2/iPad 3

Great idea there igrowing, lets convert the content to a format that the VAST majority of your audience won't be able to use.
Coverting flash to MP3/4 is a good idea, it should play on virtually any platform.
Coverting to a proprietry format like ipad/2/3 not so good.
We should be aiming to make any learning materials inclusive and not exclusive.

Ilker it can't have passed you by but you are aware that Apple doesn't support flash??
Instead of using the proprietry flash format that works on virtually all non apple systems you have to use the ipad video format that works on Ipads and some macs.
To solve it you might want to convert the swf to ipad (of course it then won't work on PCs or Linux systems) and embed it in an iframe.

You might be able to use flowplayer for this on ipads.
Worth looking into if this is your target device, otherwise you are going to have to convert the flash stuff out to MP4 format and use that instead.