With just 130Mb of internal storage, you're going to have to use a micro SD card for your music and video storage.
The music player is a pretty bog standard affair. It failed to pick up album art stored in folders alongside the music tracks it found on our SD card, which is somewhat annoying, but at least you have access to good music playback controls and can easily make playlists.
LG did not send us its headset to test with this phone, but plopping our own into the 3.5mm connector on the top edge of the handset revealed that sound quality is decidedly lacklustre.
There is no equaliser, so the slightly treble-rich tones are going to have to suffice. At higher volumes, the sound becomes somewhat distorted.
Video is much better though - MP4, DivX, Xvid, H.264, H.263 and WMV are all supported, meaning the LG Optimus GT540 can actually play back more file types than the HTC Desire out the box.
Meanwhile the handset speaker doesn't deliver enough volume to annoy fellow public transport users, and its output is decidedly tinny.
There is an FM radio with autoscan which stops every time it finds a station, and asks if you want to store it or skip it. If you store a station, only its frequency is recorded. There is no RDS and you can't edit the station info later to include its name.