Bought an mpman myself .. well it was for a present. Only complaint was the lack of market as appslib is just unworkable. So with a bit of research found an article about installing market on mid1024 which is supposed to be the same tablet with different branding.
After a few hours of trying to get files that worked I managed to install market on my sons mpman.
Next install Vending-3.1.3-signed.apk
You will then have to associate your device with your google account.
I will attach the files to this post but please use at your own risk I dont want to be blamed if you brick your tab. I can say they worked 100% for me.
I am in no way an expert in android tablets so if anyone with a bit more knowledge would care to comment on the risk of bricking (or is it possible) when installing these apks.