Welcome to Beoworld and thanks for signing up as a silver member, thereby supporting us all !
Your Beocords are in need of new belts.
The 3300 is fairly easy, I can supply the belts and mounting instructions.
If a tape is stuck in the deck, don't force anything. The instructions will tell you how to get it out without damaging neither the tape nor the deck.
The 5500 is a bit harder since more than one type of autoreverse deck was used in production.
The drawer belt should be no problem though.
In short; Remove the top cover, unscrew and lift up the large circuit
board and you will have access to the drawer motor/belt.
As a silver member you have access to service manuals and other goodies from the
download section.
Martin