The SILKYPIX Developer Studio is already available for Mac OS X, but there is no information about this Tamron version. You can browse the Download page of the developer's website to see the available products. There is nowhere mentioned about the Tamron version of the SILKYPIX Developer Studio.
Product page: http://www.isl.co.jp/SILKYPIX/english/download.html
Additionally, use the download page on Software Informer to download the necessary version. Notice that it might not be updated to the latest version.