Here are all the advanced codes that I have for audio/1629:

185 - Mute
183 - Vol Down
187 - Vol Up
184 - INPUT: AM (3-2-1)
182 - INPUT: FM/AM
056 - INPUT: VIDEO2
054 - INPUT: VIDEO1 (TV)
058 - INPUT: AUX
120 - INPUT: Cable/SAT
245 - CH- / Preset Down / CD Skip Back
249 - CH+ / Preset Up / CD Skip Fwd
247 - CD Stop
213 - Arrow Down
149 - Exit (from EPG)
150 - Pause (3-2-1)
165 - Num 0
169 - Num 1
167 - Num 2
171 - Num 3
164 - Num 4
168 - Num 5
166 - Num 6
170 - Num 7
037 - Num 8
041 - Num 9
036 - Power
107 - INPUT: CD / DVD
104 - CD Play
102 - CD Pause
106 - Scan Back (rewind)
229 - Scan Forward (ffwd)
233 - INPUT: FM (3-2-1)
228 - Random ALL Toggle (Shuffle)
197 - Arrow Right
203 - CD Number
196 - Info
200 - Similar
198 - UMusic
202 - Whole CD
069 - Rating Down
073 - Rating Up
133 - System
189 - Settings (Display)
125 - DVD Menu
000 - Repeat
002 - Play List
221 - Arrow Left
157 - Library
163 - Stored
173 - Arrow Up
109 - DVD Top Menu (EPG)
205 - Select

(If your remote uses 5 digit codes, just add 2 zeroes in front of the codes)