I have an AVI file that I can play just fine on my Mac with VLC, but when I burn it to DVD (and Toast converts it from PAL to NTSC), it doesn't play the sound on my PS3, only the video. I don't know if it's the audio encoding to begin with or if it has anything to do with the PAL-NTSC conversion. Here are the specs of the file from VideoSpec:

***** First Analyzed File Results *****

*** General Parameters ***
- Name: BOB_THE_BUILDER_SERIES_1.avi
- Container: AVI - Audio Video Interleaved
- Creation Date: 2008-12-09 11:56:26 AM
- Size: 700.0 MiB
- Duration: 1:31:38
- Bitrate: 1 068 Kbps
- Encoding Library: VirtualDubMod build 2178/release
- Encoding Application: VirtualDubMod 1.5.4.1 (build 2178/release)

*** Video Track Parameters ***
- Format: MPEG-4 XviD video
- Size: 617 MiB (88%)
- FourCC: XVID
- Track number(s): 0
- Bitrate: Max.: Undefined
Average: 942 Kbps
Min.: Undefined
- Frame rate (fps): Max.: Undefined
Average: 25.000
Min.: Undefined
- Bitrate mode: Undefined
- Encoding profile: AdvancedSimple@L5
- Resolution: 24 bits
- Width (Pixel number): 512
- Height (Pixel number): 384
- Pixel Aspect Ratio: 1:1
- Display aspect ratio: 4:3
- Chroma subsampling format: YUV420p
- TV standard: Undefined
- Interlacing: Progressive
- Encoding library: XviD 1.3.0.dev55
- Additional Parameters: BVOP: Yes
Quarter Pixel: No
Global Motion Compensation: No
Matrix: Custom
Bits/(Pixel*Frame) ratio: 0.192

*** Audio Track(s) Parameters ***
- Format: Mpeg-1 layer 3 (mp3)
- Size: 74.1 MiB (11%)
- FourCC: 0x55
- Number(s) and language(s): 1: English
- Details: -
- Profile: Layer 3
- Bitrate: 113 Kbps
- Bitrate mode: Variable
- Resolution: 16 bits
- Rate: 48.0 KHz
- Channel(s): 2 (stereo)
- Position: Undefined
- Encoding Library: LAME3.97
- Additional Parameters: Not available

*** Miscellaneous ***
- Subtitle(s): No Subtitle
- Metadata: Album: Undefined
Part number: Undefined
Track name: Undefined
Track name number: Undefined
Performer: Undefined
Screenplayer/Writer: Undefined
Genre: Undefined
Encoded date: Undefined
Comment: Undefined
Album artist: Undefined
Grouping: Undefined
Copyright: Undefined