You can copy the license key (a.k.a., 'serial number') from your IK Multimedia User Area and then paste it to the IK Multimedia Authorizer application that is used to authorize SampleTank FREE and other IK Multimedia applications, if you have any. Once you download SampleTank 3 FREE and install it, you need to authorize it, which is done using a license key that you get from your IK Multimedia User Area, where for reference if you do not already have an IK Multimedia User Account, then you need to create one, which also is free. SampleTank 3 FREE starts with an extraordinary concert grand piano and will add more sounds each week until all instrument categories are represented.

SampleTank 3 FREE is a fully functional version of SampleTank 3 whose only limitation is the preset sound set. You might need to login to see it, and you need to register to use it, but otherwise it is straightforward as best as I can determine so far, and I had no problems downloading, installing, and authorizing it. The download link is in the left column of the Sample Tank 3 Info page. SampleTank 3 supports the IK Multimedia Miroslav Philharmonik and other sampled sound libraries for the IK Multimedia SampleTank 2+ engine, where for reference the Miroslav Philharmonik virtual instrument engine actually is SampleTank 2+ but with a different graphic user interface (GUI) wrapper. SampleTank 3 is a 64-bit application and virtual instrument, so it works with NOTION running in 64-bit mode. IK Multimedia has released SampleTank 3 FREE, and it is available for download and use (Mac and Windows versions).

Sampletank free trial version