1) At Beam Store

There is one Unique Url:
http://www.heedia.com/myalbum

This information is enough for your fans in order to proceed to purchase your beam album

2) By giving them an Unlock Code

If you want to distribute your beam album through an Unlock Code then your fans need:
a) http://www.heedia.com
b) the Unlock Code

i.e go to http://www.heedia.com and use xxx@zzz as Unlock Code

*do not forget that Unlock Codes can be given for free or sold