Eleven weeks after its release, the Frozen soundtrack has certified Platinum, selling over 1,000,000 copies, and has spent four non-consecutive weeks at No. 1 on the Billboard 200 album chart. Industry sources are forecasting the album’s return to the top position on Wednesday. The last soundtrack to spend 5 weeks at No. 1 on the Billboard 200 chart was 1998’s “Titantic.” The Oscar-nominated song “Let It Go,” performed by Idina Menzel, also certified Platinum with sales over 1.2M. Menzel, who provides the…