Bee Gees baby brother Andy Gibb earned only $7,755 last year and lives rent-free in Florida, playing guitars loaned him by his brothers, the Miami News reported this week. Bankruptcy papers filed in court this week indicated that Andy Gibb has accumulated $187,041 in personal and business debts--less than the $1 million in estimated debts listed on the voluntary personal bankruptcy petition he filed earlier. The singer reported assets of $1,432.79. His 1985 income was given as $24,727 and last year it dropped to $7,755. Last week, Gibb filed another bankruptcy petition, this one for his entertainment management company, Andy Gibb Organization Inc. He listed his corporate debts at $46,289 and assets of $236.