Hi Ckobu, Thank you for your thoughtful reply.
I should have specified I use MP3 files ONLY in the Song Player so I wouldn't have the MIDI file limitation. I am using the Song Player as a mixing console, essentially like a DJ would mix songs with one caveat; this must be done quickly, seamlessly, and without error. The Pa4x handles this famously, however, I haven't seen any video specific to this feature/function.
Regards,
Al