Audacy, the nation’s second largest radio chain and a major player on the Chicago airwaves, filed for Chapter 11 bankruptcy in a Texas bankruptcy court Sunday, seeking to reduce nearly $2 billion in debt. The Philadelphia-based radio giant, which owns 225 stations, including Chicago powerhouses such as WBBM-AM 780, WXRT-FM 93.1 and WSCR-AM 670, blamed a “perfect storm” of pandemic headwinds, revenue declines and mounting debt from its 2017 megamerger with CBS Radio as driving the need for financial restructuring. “We are unquestionably a much stronger company today in serving our listeners and…