Tieline TLITAAC Works with the TLB5100ED (AAC-LC, AAC-ELD, AAC-HE[v1&2], AAC-LD)

Tieline TLITAAC AAC Algorithm Encode Licence. Software License Key – Enables AAC LC, HE-AAC V1 and V2 Encode licenses for Bridge-It codecs. 

Note Bridge-It codecs come with AAC decode licenses preinstalled.

You only need this license if you wish to encode and send audio in the AAC format.
(This license is already included in the Bridge-It Pro Codec).