Final answer:
The internal control weaknesses include inadequate segregation of duties, lack of proper authorization procedures, insufficient monitoring, and inadequate documentation and record keeping. These weaknesses facilitated the opportunity for the employee to commit and conceal fraud within the company.
Step-by-step explanation:
The general internal control weaknesses that could be inferred from All-Around Sound Co. discovery include inadequate segregation of duties, lack of proper authorization procedures, insufficient monitoring, and inadequate documentation and record keeping. A system where checks and balances are not properly in place allows for the opportunity of fraud to arise.
Segregation of Duties
Inadequate segregation of duties can allow an employee to perpetrate and conceal irregularities, in this case, altering invoice details without detection. This is because the same employee who is responsible for processing orders may also have access to the vendor's selection and invoicing details.
Authorization Procedures
Lack of proper authorization procedures implies that transactions can be made, in this instance, ordering goods, without the necessary checks to confirm the validity and necessity of the purchase.
Monitoring
Insufficient monitoring practices mean that unusual increases in orders and deliveries can go unnoticed, or that there's a failure to verify the authenticity and regularity of the vendors being used.
Documentation and Record Keeping
Finally, inadequate documentation and record keeping can complicate the detection of fraudulent activities, as false entries may be made without leaving a clear audit trail.