Dryer heats drum does not turn stopped when too

1.  Check the tension on the belt pulley.
2.  Check the belt. If it is worn, replace it.
3.  Check the felt around the front of drum (if applicable). Again, if too worn, replace it.
4.  If there is a chirping sound too, check the drum's roller bearings (the look like little wheels. The may need to be replaced too.

Most of these fixes are relatively inexpensive, and parts can be found at your local appliance parts store. (Given the date of this posting, I hope someone else helped prior to me...)