Hi,
I tried the new Yamaha's soft, Audio Phraser, to make our own audio styles. I tried with an ordinary loop of drums in format Wave and it works very well. I made an audio style test and played it on my T5. No problem for the loop to react with different time signature. Original was in 110 bpm and with 20 points more, no distorsion in sound. It's a good alternative with Rex Files and direct with the new soft. Just think to change the ".aus" when saving file with ".sty" if you want to play the audio style with your T5.