It'd be easier to find something to cure disease. That'd be hitting around 20 birds with one stone.
Edit: Sorry to double post , but is there anywhere I can find the music that plays during the arena? It's awesome.
All the game's music can be found in the game's folder somewhere, in the music folder. Alternatively, if you find a "disc (#)" item, you can change the background of any area of the game (like your house) to your liking by using it. However, the music attached to the disc is random, depending on the number, and the change is permanent.
Cure corruption potions can be obtained by winning in the casino using casino chips you dig up from material spots. Alternatively, marrying a pet (any pet), will give you a cure corruption potion as part of the wedding gift. Just get a whole bunch of "gift" items and engagement jewelry, spam give them to a random pet, and then marry him/her/it. If you choose a disposable spouse, pick an animal, so you get +2 karma instead of -15 if you sell him/her/it to the Ralph in Port Kapul's inn.
Since you have an internet connection, be sure to drop by the voting booth every now and then; there's one in every town. Regular voting increases your voter rank, which is pretty much free money per salary.