Sounds

I just installed the latest version of Dolphin and when I upload a 100mb+ file and it uploads and goes to processing and then fails...     I can upload a small file 75mb- and it will be fine and shows up and is playable....

This is already set:

max_execution_time    3000

max_input_time    3000

post_max_size    200M

upload_max_filesize   200M

Is there a way to find out why it fails??

You should receive an email from the cron daemon when it tries to process the file. Can you post the full output or attach it as a TXT file?

What's the value for memory_limit? If it's too low, the cron job is likely hitting it when processing the larger files.

Memory LImit is 256mb and I didn't get a cron email for the failure...  I get other cron emails....

Can you try another upload and see if it sends an email after it fails? Also, how long until it switches from processing to failed?

Without an error message, I can't say what's going on. You could try upping the memory_limit a bit and seeing if that works.

I've uploaded files for the past two days and no E-Mails...  I would say from  processing to fail is about a minute...

You should receive emails, unless the cron job has been edited to include a silencer (e.g., >/dev/null 2>&1). If ones's been added, remove it and try again. Also make sure the cron jobs are set to send to an email address you check. In cPanel, they send to the cPanel account's email address on the server by default.

What does the cron job look like?

ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers
  built on Feb  2 2012 01:28:23 with gcc 4.4.3
  configuration: --extra-ldflags=-static --extra-cflags=-static --enable-static --disable-shared --enable-ffplay --disable-ffprobe --disable-ffserver --enable-runtime-cpudetect --enable-memalign-hack --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-libxvid --enable-libvpx --enable-gpl --enable-nonfree --enable-pthreads --enable-libopenjpeg --enable-zlib --enable-bzlib --enable-libxavs --enable-libdirac --enable-libschroedinger --enable-libvo-amrwbenc --enable-libfreetype --enable-libnut --enable-libspeex --enable-libaacplus --enable-libfaac --enable-small --enable-libass --enable-libdc1394 --enable-librtmp --enable-openssl --enable-frei0r --enable-libopencv
  libavutil      51. 34.101 / 51. 34.101
  libavcodec     53. 60.100 / 53. 60.100
  libavformat    53. 31.100 / 53. 31.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 60.100 /  2. 60.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  6.100 /  0.  6.100
  libpostproc    52.  0.100 / 52.  0.100
[loas @ 0xa189ba0] Format loas detected only with low score of 1, misdetection possible!
[loas @ 0xa189ba0] Could not find codec parameters (Audio: aac_latm, 0 channels, s16)
[loas @ 0xa189ba0] Estimating duration from bitrate, this may be inaccurate
/home/azedmcom/public_html/az/

Is that the full output, or was it cut-off?

Thats it....

What's the codec and format of the file that's being uploaded? Is it different from the one that works?

I take that back a different sound file same size both mp3 and it worked...