What’s the Story with Qtrax’s Patent?

This is so weird and confusing. Can someone enlighten us please?
Through our online search, we found a formal document of a patent, that was assigned to Sony Music Entertainment by Qtrax on June 2014.
Qtrax told The Telegraph reporter, that they didn’t have the funds, and therefore had to turn their back on their own staff, and left without paying salaries.
According to online publications, Sony is the 4th biggest patent owner in the US (see also this). We definitely don’t think Sony buys anything for dimes & nickels.
So first, IF Qtrax sold Sony a patent, why they didn’t use these funds to pay us? What did they use the funds for?
And the second question – IF Sony purchased an asset, than why we can’t any records for its price/value in their financial reports of this time period? Isn’t it a public company that must inform its own investors on gains & expenses? We couldn’t find it neither here, here, nor here.

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