#1 buffer_size and sound_buffer arn't initialized correctly

[Martijn Lina]

I don't know if this is because of changes to jack, but
this patch ensures the buffer size is set and the
sound_buffer is initialized befare it is activated.
JACK_bufsize isn't called on my system, maybe this is
something unique to my system... this doesn't harm
anyway and fixes playing for me ;)

[Martijn Lina]

The patch.... (second go, why is this still broken at SF)

[Chris Morgan]

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This was broken due to changes in the jack api. The 0.5
release fixes this problem but you were correct, having
those buffers uninitialized is bad.