No sound using timidity

Hi everybody,

I cannot get any sound out of rosegarden (e.g. when trying to play the examples which came with it). I am running 64 Studio 3.0 (Beta3), and have a M-Audio 1010lt soundcard. What I did:
1) Start Jack
2) Start Rosegarden
3) In Jack, I connect the Rosegarden General Midi Device to Timidity Port 0 (in the Jack configuration the default Midi-Driver is set to none, do I have to change this?)
4) I load an example and press play, but I cannot hear any sound.

Recording via my Midi-Keyboard works (I can see the notes in the editor, but again cannot hear them when  I press play). Using Hydrogen or Tuxguitar works, so I think the Timidity installation is fine.

What am I doing wrong? Thanks in advance,

Markus

Here some information from rosegarden about my system

Rosegarden 1.7.3 - AlsaDriver [ALSA library version 1.0.16, module version 1.0.18a, kernel version 2.6.29-1-multimedia-amd64]

JackDriver::initialiseAudio - JACK sample rate = 44100Hz, buffer size = 1024
JackDriver::initialiseAudio - creating disk thread
JackDriver::initialiseAudio - found 8 JACK physical outputs
JackDriver::initialiseAudio - connecting from "rosegarden:master out L" to "system:playback_1"
JackDriver::initialiseAudio - connecting from "rosegarden:master out R" to "system:playback_2"
JackDriver::initialiseAudio - found 2 JACK physical inputs
JackDriver::initialiseAudio - connecting from "system:capture_1" to "rosegarden:record in 1 L"
JackDriver::initialiseAudio - connecting from "system:capture_2" to "rosegarden:record in 1 R"
JackDriver::initialiseAudio - initialised JACK audio subsystem

  ALSA Client information:

    14,0 - (Midi Through, Midi Through Port-0) (DUPLEX) [ctype 2, ptype 655362, cap 99]
    24,0 - (M Audio Delta 1010LT, M Audio Delta 1010LT MIDI) (DUPLEX) [ctype 2, ptype 589826, cap 127]
    128,0 - (TiMidity, TiMidity port 0) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,1 - (TiMidity, TiMidity port 1) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,2 - (TiMidity, TiMidity port 2) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,3 - (TiMidity, TiMidity port 3) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,0 - (TiMidity, TiMidity port 0) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,1 - (TiMidity, TiMidity port 1) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,2 - (TiMidity, TiMidity port 2) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,3 - (TiMidity, TiMidity port 3) (WRITE ONLY) [ctype 1, ptype 2, cap 66]

Creating device 0 in Play mode for connection 128:0 TiMidity port 0 (write)
Default device name for this device is MIDI software device
Creating device 1 in Play mode for connection 128:1 TiMidity port 1 (write)
Default device name for this device is MIDI software device 2
Creating device 2 in Play mode for connection 128:2 TiMidity port 2 (write)
Default device name for this device is MIDI software device 3
Creating device 3 in Play mode for connection 128:3 TiMidity port 3 (write)
Default device name for this device is MIDI software device 4
Creating device 4 in Play mode for connection 129:0 TiMidity port 0 (write)
Default device name for this device is MIDI software device 5
Creating device 5 in Play mode for connection 129:1 TiMidity port 1 (write)
Default device name for this device is MIDI software device 6
Creating device 6 in Play mode for connection 129:2 TiMidity port 2 (write)
Default device name for this device is MIDI software device 7
Creating device 7 in Play mode for connection 129:3 TiMidity port 3 (write)
Default device name for this device is MIDI software device 8
Creating device 8 in Play mode for connection 24:0 M Audio Delta 1010LT MIDI (duplex)
Default device name for this device is MIDI external device
Creating device 9 in Record mode for connection 24:0 M Audio Delta 1010LT MIDI (duplex)
Default device name for this device is MIDI hardware input device
Creating device 10 in Play mode for connection 14:0 Midi Through Port-0 (duplex) (not connecting)
Default device name for this device is MIDI output system device
Creating device 11 in Record mode for connection 14:0 Midi Through Port-0 (duplex) (not connecting)
Default device name for this device is MIDI input system device
    Current timer set to "system timer" with timer checks
AlsaDriver::initialiseMidi -  initialised MIDI subsystem

    Current timer set to "system timer" with timer checks
AlsaDriver::setRecordDevice - successfully subscribed device 9 as record port

  ALSA Client information:

    14,0 - (Midi Through, Midi Through Port-0) (DUPLEX) [ctype 2, ptype 655362, cap 99]
    24,0 - (M Audio Delta 1010LT, M Audio Delta 1010LT MIDI) (DUPLEX) [ctype 2, ptype 589826, cap 127]
    128,0 - (TiMidity, TiMidity port 0) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,1 - (TiMidity, TiMidity port 1) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,2 - (TiMidity, TiMidity port 2) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    128,3 - (TiMidity, TiMidity port 3) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,0 - (TiMidity, TiMidity port 0) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,1 - (TiMidity, TiMidity port 1) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,2 - (TiMidity, TiMidity port 2) (WRITE ONLY) [ctype 1, ptype 2, cap 66]
    129,3 - (TiMidity, TiMidity port 3) (WRITE ONLY) [ctype 1, ptype 2, cap 66]