How can I convert .DM ringtone to mp3?

I have Ringtone that I purchased and now I have a different phone but the ring tone is .DM file. How can I convert it to mp3 so I can put it on my new phone?

TIA

 

this converter probably supports your file type
http://www.effectmatrix.com/total-video-converter/

your phone probably supports DM anyways

-tripplite

 

Thanks for the link but that tool does not support .DM files. I tried just transfering the file to the new phone but it does not play the ringtone on the new phone.

 

what is your phone model/version/brand service supplier?

 

Phone is Nokia 6682 with AT&T which also where I purchased the ringtone.

 

then it should be compatible...sry never herd of .DM..... try renaming it to .MP3, and see if it registers like that