Hi.
I would suggest you try the Free Dictionary, which not only has phonetic pronunciations but also soundbites, although in this case they are pronounced the same:
mourning - definition of mourning by the Free Online Dictionary, Thesaurus and Encyclopedia.
If you try the search for both words, you will find that they
can both be pronounced the same, but, if you want to stress the difference, as it may not be apparent from the context, you can lengthen the vowel in the 1st sylable in "mourning". This is identified in the phonetics, but not in the soundbite.
Hope this helps.
NT
PS DavidL: Mine crossed with yours.