Huh? It's talking about glee clubs, and in particular the glee club on Glee, who mostly do live performances. The article begins, "For a show that regularly tackles thorny issues like teen pregnancy and alcohol abuse, it’s surprising that a million dollars worth of lawbreaking would go unmentioned." But this premise seems to be faulty - there's no indication that there is a million dollars worth of law-breaking involved in performing songs live as part of a glee club which is most likely covered by the absurdly cheap school/town ASCAP, BMI etc license.

Certainly I haven't heard of them talking about releasing a recording on Glee, although I missed a couple episodes...

EDIT: I see that the article discusses in particular the videos that were created which would constitute "recordings". On the mashup issue, presumably they aren't actually recording mashups but writing them to be performed live - these aren't lip syncing groups, and most glee clubs probably don't make videos either so it seems fairly moot.