Sorry, but Music Maker is a 32bit-only host program at this point in time. The switch to 64bit architecture would be a fundamental change to the software, which will only happen in the context of a major Music Maker release - not via a smaller update. So, it couldn't possibly happen before the release of the next big Music Maker generation next summer.
A possible answer for you is to buy, download and install jBridge. Follow its set up and operating instructions carefully and you will be able to use your 64 bit plug in a 32 bit environment, and vice versa. I have it and can successfully use a range of 32 bit VSTs in a 64 bit app and 64 bit VSTs in 32 bit apps.