Thanks to [BG] RePhLeX [L⑨], I've been able to add the sounds from the old BG server. If you don't feel like downloading them when joining, then download them from http://filesmelt.com/dl/bgfunsounds.rar and extract them to the tf/sound/tenda/ folder. One issue down, several more to go!

Edit: Also thank Raipizo and Pocari Sweat for asking RePheLex. :V

Ninja edit: Current custom map list:
plr_hightower
pl_thundermountain
cp_coldfront
arena_cow
arena_roundhouse
koth_grove_a21
balloon_race_v3
cp_aqua
cp_castle4
cp_jailbreak_b3
cp_japan_v2
cp_lazytown_lazynite
cp_orange_x3_dc7
cp_pacman_plus_wtf
cp_warpath2
ctf_2fort_classic_v2
ctf_bankjob
ctf_convoy_v2
ctf_royal_b3
cyberpunk
dm_duel_pro_rc4
dm_mariokart2_b2v2
dm_natespool
duel_store
harbl_hotel
koth_always_b2
koth_tomb_b3
mario_kart
pl_donkeykong_final
pl_minepit_b3
rats_tequila_b01
toystore
cp_hotelhell
arena_coryinthehouse_b1
ctf_castlewars_finalbeta
cp_vertigo_beta3
cp_glacier_rc6
ctf_bball2
ctf_hallofdeath
arena_brawl_b1
arena_concord_b3
arena_desolation_pb1
arena_devils_canyon
arena_farm_feud_b1
arena_harvest_v2
arena_ravage_b1
arena_storm_b1
cph_basalt_a2
ph_canyon_a1
ph_cargo_b7
ph_cliffface_b1
ph_cyberpunk_a3
ph_farm_a5
ph_goldtooth_a1
ph_grassland_a1
ph_headquarters_b3
ph_lumberyard_a2
ph_maze_a4
ph_mountain_a2
ph_northural_a2
ph_oasis_a1
ph_otherside_a1
ph_range_a3
ph_sawmill_a2
ph_spookyharvest_a2
ph_switcheroo_a3
ph_timbertown_a3
ph_warehouse_b1
ph_watchtower_a1
spooky_ravine_a1
melee_ringking_3
zf_asylum_b2
zf_dustbowl_b4
zf_lake_v4
zf_industry_rc1
zf_fortress_v4
zf_outsetisland_v1_fix

Feel free to suggest maps to add.