[petrescu]

Questo sito offre la possibilità di convertire online file audio, video, documenti, ringtones, database e tanto altro.
Veramente ottimo!!
http://media-convert.com/conversione/

Questi i formati supportati:
AUDIO
# WAV to MP3, OGG, AAC, AMR, FLAC, MPC, MMF, AU, AIFF, QCP.
# MP3 to WAV, OGG, AAC, AMR, FLAC, MPC, MMF, AU, AIFF, QCP.
# WMA to WAV, OGG, AAC, AMR, FLAC, MP3, MPC, MMF, AU, AIFF, QCP.
# OGG to WAV, MP3, AAC, AMR, FLAC, MPC, MMF, AU, AIFF, QCP.
# AAC to WAV, MP3, OGG, AMR, FLAC, MPC, MMF, AU, AIFF, QCP.
# MP4 (AAC) to WAV, MP3, OGG, AMR, FLAC, MPC, MMF, AU, AIFF, QCP.
# FLAC to WAV, MP3, OGG, AMR, AAC, MPC, MMF, AU, AIFF, QCP.
# VQF (Yamaha TwinVQ) to WAV, MP3, OGG, AMR, AAC, FLAC, MMF, AU, AIFF, QCP.
# MPC (Musepack) to WAV, MP3, OGG, AMR, AAC, FLAC, MMF, AU, AIFF, QCP.
# REAL AUDIO to WAV, MP3, OGG, AMR, AAC, FLAC, MPC, MMF, AU, AIFF, QCP.
# AMR to WAV, MP3, OGG, AAC, FLAC, MPC, MMF, AU, AIFF, QCP.
# MMF (pcm) to WAV, MP3, OGG, AAC, FLAC, MPC, AMR, AU, AIFF, QCP.
# AU to WAV, MP3, OGG, AAC, FLAC, MPC, AMR, MMF, AIFF, QCP.
# AIFF to WAV, MP3, OGG, AAC, FLAC, MPC, AMR, AU, MMF, QCP.
# QCP to WAV, MP3, OGG, AAC, FLAC, MPC, AMR, AU, AIFF, MMF.
# 3GP to WAV, MP3, OGG, AAC, FLAC, MPC, AMR, AU, AIFF, MMF.

VIDEO
# 3GP AMV ASF AVI DV FLI FLV GVI MKV MOV MP4 MPG OGM RM SWF VOB WMV

ARCHIVI
# 7Z BZ2 BZA CAB GZ LHA LZH RAR TAR TGZ YZ1 ZIP

IMMAGINI
# AVS BMP CIN DCX DIB DPX FITS GIF ICO JFIF JIF JPE JPEG JPG MIFF OTB P7 PALM PAM PBM
PCD PCDS PCL PCX PGM PICT PNG PNM PPM PSD RAS SGI SUN TGA TIF TIFF WMF XBM XPM YUV
# CGM DXF EMF EPS MET MVG ODG OTG STD SVG SXD WMF

e poi come detto anche documenti, database e altro