The 'wireless usb extender' idea comment was only meant as a way of implementing wirelessness for SS. I was not suggesting a dedicated device that sends page turns, Altough that said , you could very easily break open a keyboard an hack it to send the keystrokes you need, Use a BT /wifi keyboard and voila problem solved.
Yes I agree it it is a simple task, that is why I am amazed that the apps you mention do not use MIDI. What do you do if you want to play back a midi track and sync it to the page displays? Personally, I would also be writing to the developers of the apps and asking them why they don't respond to MIDI? It is a musical standard.
KMI StringPort_1650, SoftStep_VK2 v1.2 & MIDI Expander; Mac_Moore Guitar,
Roland VG 8, 88 & 99, YamahaVL 70m; OSX 10.6.8, iMac i7 2.8G QC; MaxMSP 5.1.8, Ableton Live 8.2.2, M4L, SC3, QC, cSound, etc, etc,