Well i see few options for you:
A) Fix your BomeBox.
B) If there is a way to satisfy the velocity conversion problem on a Midihub use it.
C) Obtain the use of a Windows PC long enough to set up the MIDI Solutions Velocity Converter (MSVC) to satisfy your needs. The MSVC will remember its setup so you only need the Windows PC for an hour or two – maybe you could borrow one.
D) See if some other MIDI modifier will solve your problem. For instance the Conductive Labs MRCC (see this Elektronauts Thread) has some possibilities in this regard, though that is still under development and so you can’t know for sure on that yet.
Expect this thread to get very busy with Midihub usage discussion very soon, there is a wave of Midihubs on the way. Mine has now entered the US Postal Service, so i’m expecting it in a week or so.
I will be exploring the Midihub capabilities as soon as i get one. I will visit on velocty conversion along the way, but will spend most of my time with the 10,000 other things the Midihub will do – principally in the realm of generative music, where it’s strength lays.