Here are three good links among the many of varying quality one can find on YouTube.

The first is a short film about an actual partisan bunker in Northern Lithuania being visited by military types in what appears to be a commemoration.

The second is a trailer from the Lithuanian Film, Vienui Vieni (Utterly Alone), a feature about the partisan resistance.

The third consists of a series of photos with music. The photos consist of some of the classics from that period.