How to set songs as iphone ringtone?

i wonder is there some way to set my own songs or music video as ringtone for my iphone?

Reply 1 : How to set songs as iphone ringtone?

i know a step by step gudie on how to set own songs like mp3, ogg, flac, wav, wma as iphone ringtone
http://www.bigasoft.com/articles/how-to-make-your-own-iphone-ringtones-with-bigasoft-iphone-ringtone-maker.html


the software in this guide can easily convert music formats like MP3, WMA, APE, WAV, M4A to iphone ringtone m4r
it also can make ringtone from music videos like AVI, MPEG, WMV, DivX,
MP4, H.264/AVC, AVCHD, MKV, RM, MOV, XviD, 3GP, WebM, VP8 etc.
moreover, it even can make iphone ringtone longer than 40 seconds with the following solution

http://www.bigasoft.com/articles/how-to-make-iphone-ringtone-longer-than-40-seconds.html