I want make some slideshow with music what software shall i use?

You can use auto home movie maker
http://www.asoftech.com/ahm/index.html

You can convert your PowerPoint to slideshow by exporting it to ppsx file format in the latest version of PowerPoint. The extension PPSX is more of a slide show of data files and you can't edit it even with the authorized software. If you don't have the latest version of PowerPoint, you can also make use of Leawo Video Converter to help you, free trial version is available.
BTW, you can also convert your ppsx to video so that you can free your hand from the presentation. Here is the guide.
https://www.leawo.org/tutorial/how-to-convert-ppsx-to-video-online.html?fixya=1410

Recommend Leawo Video Converter. It allows you to make some slideshows with music. https://www.leawo.org/tutorial/how-to-make-an-flv-slideshow-on-mac-with-mac-flv-slideshow-maker.html

You can use slideshow maker software to make a slideshow with music. For example, you can use Leawo DVD Creator to do this which can create slideshows with simple steps and with music added.

Hi Dude! You can try LightMV. This program is one of the best slideshow maker I used. It can help you create stylish slideshow in just few seconds. Try it here: LightMV Free Online Photo Video Maker to Create Great Video

Download WonderShare Flash Slideshow Builder from the below link. It creates amazing slideshows in just a few clicks from your pictures
http://itcongress.blogspot.com/2012/08/wondershare-flash-slideshow-builder-451.html

Two methods for you to make a slideshow:
1> save your PowerPoint file as slide show:
Before you save your PPT as PPSX format you need to set up the exact time duration for each slide so that it can run by itself. For more details, please click How to Timing Automatic PowerPoint Presentations.

Then you should place the presentation file and the music together in the same folder, zip it and send to the recipients.

2>convert powerpoint to Flash
No sound or any other effect gets lost with both converters. Then email the video presentation or put it on YouTube so that they can share.