I found a cracked version of Music Hub Tile 1.0.9.0 (I assume it's against policy to post a link to it).
I was able to side-load it, but it is before reker implemented the live tile (it's just a static launcher).
I was able to download what seems to be the official Windows Phone Store version of Music Hub Tile 1.1.11.0, but I haven't been successful in side-loading it.
The application deployment program gives an error and I can't unzip it (it's, assumingly, encrypted).
I have reached out to reker, but haven't received a response.
It is really uncool, of Microsoft, to not allow a purchaser to install.
There are, at least, six apps/games, that I paid for, that I can't install.
Microsoft did offer to refund the purchase price, but I'd rather just have the app.
JJ