Sam, thanks for the advice to me to get a Tascam US-122L to get round the problem that the Realtek software in my Acer doesn’t allow simultaneous audio input and output. Using the Tascam when I record to Powertracks I can now hear my input at the same time as the midi from Powertracks. I’m also very pleased that the Tascam lets me record guitar and vocals simultaneously as a stereo track, effectively with total separation of the voice and guitar, and that Powertracks lets me split the stereo track into two mono tracks which can be modified independently and then merged together again. Your advice has been very valuable and the forum very useful.