Yes.. try it through openwebif and see what you get. You should be able to save the .m3u file, look inside it and see what port is being used, though I don't think you can change the default streaming port anyway!
If it works through openwebif on pc, then it should work through the 'smart' device but it would need the right codec to be able to play, and this isn't something you can add in. Therefore I guess it's possible the Blu-ray player has limited codecs.