Go into Richard's house and wait until the music has looped a few times. Eventually it will stop, then play a little tune found in Mario Paint and Yoshi's Story, then the regular music will start up again.
If you don't want to pay the outrageous prices for items in the Mabe Village shop, you CAN steal items. To do this, simply walk up to the item and pick it up as if you were going to buy it. While holding the item, walk BEHIND the shopkeeper, and then quickly walk out the door while he is facing the other way. This may require more than one try, especially on the more expensive items (like the Shovel or Bow). If you succeed, however, there are drawbacks. First of all, everyone will call you THIEF instead of the name you used, and the next time you enter the shop, the shopkeeper will kill you.
This glitch is useful, because the famous screenwarp glitch is fixed in the DX version. First, kill 4 enemies on the overworld (Mysterious Woods is the closest), then go to Mabe Village. Walk behind BowWow's kennel, stand behind the top right corner of it and walk in to it and hold Down + Left. If successful, you will enter a glitched world, otherwise try again. In glitched world, you can find treasure from much later in the game like the Magic Rod. Refer to the Underworld Treasure Guide FAQ for further information.