Timidity++ Midi out driver + van basco's hangs the system

After installing the driver by hand due to CORE-9897
It's visibile/active in audio properties.
Using VanBasco's player and setting "Timidity++ -Driver" as output device te driver is invoked
You can se the driver spamming :
4: Getting buffer...
5: Got buffer.
5: Preparing buffer 4...
5: Buffer 4 prepared.
This spam come from timidity++ source w32_a.c function output_data

hit play in vanbasco's hang the system.

PS: timidity gui can play midi using soundfonts

Refs:
http://sourceforge.net/projects/timidity/
http://www.vanbasco.com/downloads/vkaraoke.exe