I finally managed to get some stability using a Zoom H4.
If these comments and tips help anyone - great!

Hardware setup:

• on old H4 portable recorder (2 integrated microphones and 2 XLR line imputs)
  
• an old laptop running WIN7
  
• USB2 cable to link H4 to the laptop
  
• headphones connected to H4 (well obviously)
  

• mine was running Ver-1 firmware which does not operate ASIO
  
• it needs an upgrade to Ver2.4 which was downloaded from Zoom site
  
• to upgrade, place the 'system.bin' file in the root directory of the SD card (that is inside H4)
  
• power up H4 with an external power supply and while pressing the round MENU button down
  
• ASIO driver is also downloaded from the Zoom site and installed on the laptop
  
• here is a tip, if the driver does not install at first, try installing it in a compatibility mode
  
• to do this > right click on the driver file > click Properties > select 'Compatibility' tab > select a compatibility mode e.g. XP or Vista
  

• if the H4 does not pass J-K latency test at first, click 'Tweaking ASIO Device Parameters' - a link below some notes on the right of the window
  
• open ASIO Control Panel (can also be opened by MANAGE > AUDIO PROPERTIES > CONFIGURATIONS > ASIO...
  
• adjust latency on ASIO to 10mSec (mine was set to 2msec and was failing J-K latency tests until I adjusted it to 10mSec)
  
• at that stage everything was 'smooth sailing'
  
• use 44kHz as the sampling rate
  
• in 'next steps' of the J-K setup process, choose audio inputs (microphones in my case) and outputs (Line / Headphones)
  
  

I've purchased several jamtracks and also converted my own mp3s to flac files, but once loaded and played, often they won't close.   This would then require a restart of the application and boot all of the participants out.

Hi, newish user here. I have a new laptop and have loaded JK and can start it up, audio interface working OK and I can join sessions and hear users OK.

When I try to broadcast, either as a broadcaster (for my mates who have a band) or if I select Performer and Broadcaster, when I click Staet Broadcast it starts and within a few seconds I get an error saying Live Stream Stutdown. 

I have checked my router (BT Smart Hub 2) and I have also set up UDP for ports 12000 to 12010 and configured that in JK too.

I've tried a restart, I've reloaded JK and the problem persists.

Now, to add a bit to the mix, I borrowed a Mac whilst I was waiting for my new laptop arrive and I was able to broadcast with that no problem however that too is now experiencing this same problem.  Interestingly as I type this I just checked firmware update on my hub and it was yesterday..

does anyone have any thoughts/ideas?

I have a steinberg UR22C audio interface.  I was asked to join my first session with friends.  They could see me but there was no audio and they said it was grayed out. I am also using an ethernet cable for my connection.  I am running Windows 10 on my computer and it recognizes the steinberg UR22C audio interface but Idon't think the Jamkazam program is recognizing it.  Can anyone help me with this?  Thanks, Jeff

Anybody know why certain tracks of a JamTrack are getting unwantingly muted? I purchased a JamTrack for Watermelon Man and muted the Sax track so I could play the melody and solo. The piano track was unwantedly muted and I can't find it. The help page is not working.

Anybody got a solution to this? Thanks.
teetosh

I am about to delete Jamkazam from my computer and thought I'd throw this out there before I do. I was so pumped when I first discovered Jamkazam but honestly after two months of reading peoples posts and tweaking every setting possible, I just have to ask, is anyone using it successfully?  I'll be the first to admit I'm not the most tech savvy guy but geeze.... Anyway it'll be curious to see what replies I get, and honestly I'm am so hoping someone says "yes, it works great" and could possibly enlighten me as to what I'm doing wrong. I've watched so many YouTube vids of people playin together so effortlessly, it's crazy to think that I am doing something so wrong to make it not work at all.

I am surprised to not read any recommendation about standardization of sampling rates and number of bits per sample.

From my simple understanding, differences in sampling rates should lead to additional effort and artefacts during resampling.

Any hints / comments / experiences ?

Reducing latency by increasing the sampling rate to extreme values like 96 kHz does not make sense to me

I'm trying to set up Jamkazam.
Using focusrite clarett with Mac pro elcapitan
Could not get Ableton Live to work so I decided to use effects in my qsc touchmix mixer sending a single output into clarett.
Setup all volumes to the max levels before distortion but the recorded mpeg has very low audio level.
Any suggestions?
Thanks so much,
Christopher

i've got a behringer 404hd and was working great but now, for some reason, the volume will not adjust with my live tracks column and when muted, I still hear my instruments through my headphones and my band mates can't hear me until I un mute. Whats going on here.

I've just signed up for JamKazam today.

To check it out initially I installed the app on my laptop (MacBook Pro) and downloaded my free JamTrack.

But I actually have my nice audio interface etc on a different computer (an iMac).  I guess I can log in there and install the software, but will it bring that Free JamTrack along with it or can I copy it over somehow, or do I have to buy a 2nd copy or ... ?

I've been a skeptic of this whole "jamming together on the internet" idea but some friends from where I take guitar lessons are using it so it can't hurt to give it a try.

Jeff