Yes,its true!You can play .ogg files on your 7650/3650.Player Drill is a music player that allows user to easily select a part of a tune to be played repeatedly. The wannabe musicians can use this, to learn to play a tune, a guitar solo for example.
The SW provides easy pause and resume functions and possibility to save a part to be practiced later.
Currently .wav files and .ogg files are supported.
There are some restrictions on the type of Ogg Vorbis files that can be played:
They should contain only one channel (stereo files are not supported)
They should be using sample rate 8000Hz or 16000Hz. All others sample rates are not supported.
Best of all,its freeware: http://www.kolumbus.fi/partanen.tiina/