Can't get sound out of a midi track in ardour3

Hello.

I’ve been following this tutorial on how to use linuxsampler with ardour to use sfz files.
http://libremusicproduction.com/tutorials/linuxsampler-and-ardour-using-them-together
I’ve quite done the steps exactly as stated.

Everything is fine except that I can’t hear any sound out of the track. I use that built in midi keyboard. Where can the problem possibly be!? Maybe there’s something missing in the tutorial?

…forgot to mention; I’m fairly new to ardour so please bear with me :smiley:

I really don’t know what happened but I just tried the steps again and it worked on the second time. I can hear sounds!

Thanks for your concern, sorry I didn’t reply since.