On the file manager, look for the folder "Download". The file transferred via Bluetooth can be found there. Let me know if you find it.

mmm defo only playing through music player eh cant seem to evwen located the bluetoothed tune  so confused ???  with file manager  showing my sd card but dont know where it storing the bluetoothed tune  

bluetoothed the ringtone to fone but only playing it through music player but got file manager insrtalled confusded

Using a file manager app, move the ringtone you want to use to the folder "Ringtone". Check if it will show up on the list when choosing a ringtone. Please let me know if that works.