I found that by TX´ing on BC with a mono mp3 file source, I do not loose part of the stereo´s different sounds (sometimes voice, guitar or others). An excellent half an hour - two round show on each participant. Steve, frank, Dave, Cale & me. (Two from the US of A, one from France, this Tico and the winner and a newbie; from the UK) ... Congratulations to all.