Any cross platform MIDI modules yet?

Fixed PortMIDI sysex problem:

static PmError winmm_end_sysex(PmInternal *midi, PmTimestamp timestamp)
{
midiwinmm_type m = (midiwinmm_type) midi->descriptor;
PmError rslt = pmNoError;
assert(m);
if (midi->latency == 0) {
/* Not using the stream interface. The entire sysex message is
in m->hdr, and we send it using midiOutLongMsg.

*/

// ********************

m->hdr->dwBytesRecorded = 0;
m->hdr->dwBufferLength = m->sysex_byte_count;

// ********************