Dear Ms. Romulo,
Thank you for posting your request on History Hub!
The audio recordings from the Philippines during WWII may be in the Records of the Office of War Information (Record Group 208) in the custody of the National Archives at College Park - Motion Picture (RDSM). For further information, please contact RDSM via email at firstname.lastname@example.org.
We also suggest that you contact the MacArthur Archives, MacArthur Square, Norfolk, VA 23510. The telephone number is (757) 441-2965 and their web site is https://www.macarthurmemorial.org/archives.asp.
We hope this is helpful. Best of luck with your research!